diff --git a/lib/checkout_sdk/accounts/accounts.rb b/lib/checkout_sdk/accounts/accounts.rb
index 3bf18ec..5316c68 100644
--- a/lib/checkout_sdk/accounts/accounts.rb
+++ b/lib/checkout_sdk/accounts/accounts.rb
@@ -34,6 +34,7 @@
 require 'checkout_sdk/accounts/instrument_details_faster_payments'
 require 'checkout_sdk/accounts/instrument_details_sepa'
 require 'checkout_sdk/accounts/instrument_details_card_token'
+require 'checkout_sdk/accounts/instrument_details_ach'
 require 'checkout_sdk/accounts/payment_instrument_request'
 require 'checkout_sdk/accounts/payment_instruments_query'
 require 'checkout_sdk/accounts/update_payment_instrument_request'
diff --git a/lib/checkout_sdk/accounts/instrument_details_ach.rb b/lib/checkout_sdk/accounts/instrument_details_ach.rb
new file mode 100644
index 0000000..ae3efec
--- /dev/null
+++ b/lib/checkout_sdk/accounts/instrument_details_ach.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module CheckoutSdk
+  module Accounts
+    # ACH bank-account instrument details. Maps swagger `PlatformsInstrumentDetailsAch`.
+    # All three attributes are required.
+    #
+    # @!attribute account_number
+    #   @return [String] The alphanumeric value that identifies the account.
+    # @!attribute routing_number
+    #   @return [String] The 9-digit American Bankers Association (ABA) routing number that
+    #     identifies the financial institution.
+    # @!attribute account_type
+    #   @return [String] The type of bank account. One of `savings`, `checking`.
+    class InstrumentDetailsAch < InstrumentDetails
+      attr_accessor :account_number,
+                    :routing_number,
+                    :account_type
+    end
+  end
+end
diff --git a/lib/checkout_sdk/issuing/amend_dispute_request.rb b/lib/checkout_sdk/issuing/amend_dispute_request.rb
new file mode 100644
index 0000000..3a59a35
--- /dev/null
+++ b/lib/checkout_sdk/issuing/amend_dispute_request.rb
@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+module CheckoutSdk
+  module Issuing
+    # Request body for POST /issuing/disputes/{disputeId}/amend.
+    # Submit an amendment to a dispute that is currently blocked from proceeding. Maps swagger
+    # `amend-dispute-request`. All fields are optional.
+    #
+    # @!attribute reason
+    #   @return [String] The updated four-digit scheme-specific reason code. If not provided, the
+    #     existing reason code is retained.
+    # @!attribute amount
+    #   @return [Numeric] The updated disputed amount, in the minor unit of the transaction currency.
+    #     If not provided, the existing amount is retained.
+    # @!attribute evidence
+    #   @return [Array<Hash>] Evidence supporting the dispute (maps `IssuingDisputeEvidence`).
+    # @!attribute fraud_details
+    #   @return [IssuingDisputeFraudDetails] Fraud-related details. Required if `reason` specifies a
+    #     fraud-related dispute.
+    # @!attribute reason_change_justification
+    #   @return [String] Justification for changing the reason at the escalation stage. Max 13000
+    #     characters.
+    # @!attribute action_response
+    #   @return [String] Free-form text explaining your choices or asking questions about the
+    #     requested changes. Max 1000 characters.
+    class AmendDisputeRequest
+      attr_accessor :reason, :amount, :evidence, :fraud_details,
+                    :reason_change_justification, :action_response
+    end
+  end
+end
diff --git a/lib/checkout_sdk/issuing/create_dispute_request.rb b/lib/checkout_sdk/issuing/create_dispute_request.rb
index 3fc7021..639c4e8 100644
--- a/lib/checkout_sdk/issuing/create_dispute_request.rb
+++ b/lib/checkout_sdk/issuing/create_dispute_request.rb
@@ -14,11 +14,14 @@ module Issuing
     #   @return [Numeric]
     # @!attribute presentment_message_id
     #   @return [String]
+    # @!attribute fraud_details
+    #   @return [IssuingDisputeFraudDetails] Fraud-related information to send with the chargeback.
+    #     Required if the dispute has a fraud-related reason code.
     # @!attribute justification
     #   @return [String]
     class CreateDisputeRequest
       attr_accessor :transaction_id, :reason, :evidence, :amount,
-                    :presentment_message_id, :justification
+                    :presentment_message_id, :fraud_details, :justification
     end
   end
 end
diff --git a/lib/checkout_sdk/issuing/escalate_dispute_request.rb b/lib/checkout_sdk/issuing/escalate_dispute_request.rb
index 9cfbcd8..e1e58da 100644
--- a/lib/checkout_sdk/issuing/escalate_dispute_request.rb
+++ b/lib/checkout_sdk/issuing/escalate_dispute_request.rb
@@ -10,10 +10,14 @@ module Issuing
     #   @return [Numeric]
     # @!attribute reason_change
     #   @return [String]
+    # @!attribute fraud_details
+    #   @return [IssuingDisputeFraudDetails] Fraud-related details. Required if the dispute has a
+    #     fraud-related reason code at the escalation stage, or after a reason-code change to a
+    #     fraud code.
     # @!attribute justification
     #   @return [String] Required.
     class EscalateDisputeRequest
-      attr_accessor :additional_evidence, :amount, :reason_change, :justification
+      attr_accessor :additional_evidence, :amount, :reason_change, :fraud_details, :justification
     end
   end
 end
diff --git a/lib/checkout_sdk/issuing/identification_document.rb b/lib/checkout_sdk/issuing/identification_document.rb
deleted file mode 100644
index 5a192b0..0000000
--- a/lib/checkout_sdk/issuing/identification_document.rb
+++ /dev/null
@@ -1,18 +0,0 @@
-# frozen_string_literal: true
-
-module CheckoutSdk
-  module Issuing
-    # Identification document attached to a cardholder. Matches swagger
-    # `IdentificationDocument`. `type` and `front_document_id` are required.
-    #
-    # @!attribute type
-    #   @return [String] Document type (e.g. "passport"). [Required]
-    # @!attribute front_document_id
-    #   @return [String] File id of the front-side scan. [Required]
-    # @!attribute back_document_id
-    #   @return [String] File id of the back-side scan (when applicable).
-    class IdentificationDocument
-      attr_accessor :type, :front_document_id, :back_document_id
-    end
-  end
-end
diff --git a/lib/checkout_sdk/issuing/issuing.rb b/lib/checkout_sdk/issuing/issuing.rb
index b331c07..e59f99d 100644
--- a/lib/checkout_sdk/issuing/issuing.rb
+++ b/lib/checkout_sdk/issuing/issuing.rb
@@ -8,10 +8,8 @@
 # Cardholders / Cards updates
 require 'checkout_sdk/issuing/issuing_phone_number'
 require 'checkout_sdk/issuing/issuing_address'
-require 'checkout_sdk/issuing/identification_document'
 require 'checkout_sdk/issuing/update_cardholder_request'
 require 'checkout_sdk/issuing/update_card_request'
-require 'checkout_sdk/issuing/schedule_revocation_request'
 
 # Simulations
 require 'checkout_sdk/issuing/simulate_refund_request'
@@ -22,7 +20,11 @@
 require 'checkout_sdk/issuing/update_control_profile_request'
 
 # Disputes
+require 'checkout_sdk/issuing/issuing_dispute_fraud_type'
+require 'checkout_sdk/issuing/issuing_dispute_fraud_details'
 require 'checkout_sdk/issuing/create_dispute_request'
 require 'checkout_sdk/issuing/escalate_dispute_request'
+require 'checkout_sdk/issuing/amend_dispute_request'
+require 'checkout_sdk/issuing/submit_dispute_request'
 
 require 'checkout_sdk/issuing/issuing_client'
diff --git a/lib/checkout_sdk/issuing/issuing_client.rb b/lib/checkout_sdk/issuing/issuing_client.rb
index f01d24e..4c35735 100644
--- a/lib/checkout_sdk/issuing/issuing_client.rb
+++ b/lib/checkout_sdk/issuing/issuing_client.rb
@@ -20,10 +20,11 @@ class IssuingClient < Client
       REVERSALS = 'reversals'
       REFUNDS = 'refunds'
       RENEW = 'renew'
-      SCHEDULE_REVOCATION = 'schedule-revocation'
       DISPUTES = 'disputes'
       CANCEL = 'cancel'
       ESCALATE = 'escalate'
+      AMEND = 'amend'
+      SUBMIT = 'submit'
       TRANSACTIONS = 'transactions'
       DIGITAL_CARDS = 'digital-cards'
       ADD = 'add'
@@ -36,7 +37,7 @@ class IssuingClient < Client
       private_constant :ISSUING, :CARDHOLDERS, :CARDS, :THREE_DS, :ACTIVATE, :CREDENTIALS,
                        :REVOKE, :SUSPEND, :CONTROLS, :CONTROL_GROUPS, :CONTROL_PROFILES,
                        :SIMULATE, :AUTHORIZATIONS, :PRESENTMENTS, :REVERSALS, :REFUNDS,
-                       :RENEW, :SCHEDULE_REVOCATION, :DISPUTES, :CANCEL, :ESCALATE,
+                       :RENEW, :DISPUTES, :CANCEL, :ESCALATE, :AMEND, :SUBMIT,
                        :TRANSACTIONS, :DIGITAL_CARDS, :ADD, :REMOVE
 
       # @param [ApiClient] api_client
@@ -145,26 +146,6 @@ def renew_card(card_id, renew_request = nil)
         )
       end
 
-      # Schedule a card revocation. POST /issuing/cards/{cardId}/schedule-revocation.
-      # @param [String] card_id
-      # @param [Hash, ScheduleRevocationRequest] schedule_revocation_request
-      def schedule_card_revocation(card_id, schedule_revocation_request)
-        api_client.invoke_post(
-          build_path(ISSUING, CARDS, card_id, SCHEDULE_REVOCATION),
-          sdk_authorization,
-          schedule_revocation_request
-        )
-      end
-
-      # Cancel a scheduled card revocation. DELETE /issuing/cards/{cardId}/schedule-revocation.
-      # @param [String] card_id
-      def cancel_scheduled_card_revocation(card_id)
-        api_client.invoke_delete(
-          build_path(ISSUING, CARDS, card_id, SCHEDULE_REVOCATION),
-          sdk_authorization
-        )
-      end
-
       # ====== Controls (legacy single endpoint) ======
 
       # @param [Hash] control_request
@@ -317,6 +298,32 @@ def escalate_issuing_dispute(dispute_id, escalate_dispute_request)
         )
       end
 
+      # Submit an Issuing dispute. POST /issuing/disputes/{disputeId}/submit.
+      # @param [String] dispute_id
+      # @param [Hash, SubmitDisputeRequest] submit_dispute_request
+      # @deprecated Use {#create_issuing_dispute} to create and submit a dispute in one step, or
+      #   {#amend_issuing_dispute} when the dispute status is `action_required`.
+      def submit_issuing_dispute(dispute_id, submit_dispute_request = nil)
+        api_client.invoke_post(
+          build_path(ISSUING, DISPUTES, dispute_id, SUBMIT),
+          sdk_authorization,
+          submit_dispute_request
+        )
+      end
+
+      # Amend an Issuing dispute. POST /issuing/disputes/{disputeId}/amend.
+      # Submit an amendment to a dispute that is currently blocked from proceeding. Handles both
+      # chargeback-stage and escalation-stage amendments using the same payload.
+      # @param [String] dispute_id
+      # @param [Hash, AmendDisputeRequest] amend_dispute_request
+      def amend_issuing_dispute(dispute_id, amend_dispute_request = nil)
+        api_client.invoke_post(
+          build_path(ISSUING, DISPUTES, dispute_id, AMEND),
+          sdk_authorization,
+          amend_dispute_request
+        )
+      end
+
       # ====== Transactions ======
 
       # @param [Hash] transactions_query
diff --git a/lib/checkout_sdk/issuing/issuing_dispute_fraud_details.rb b/lib/checkout_sdk/issuing/issuing_dispute_fraud_details.rb
new file mode 100644
index 0000000..59558d6
--- /dev/null
+++ b/lib/checkout_sdk/issuing/issuing_dispute_fraud_details.rb
@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module CheckoutSdk
+  module Issuing
+    # Fraud-related information required when the dispute reason code is fraud-related.
+    # Maps swagger `IssuingDisputeFraudDetails`. Reused by create, escalate and amend dispute
+    # requests.
+    #
+    # @!attribute fraud_type
+    #   @return [String] {IssuingDisputeFraudType} The type of fraud the cardholder is asserting.
+    #     [Required]
+    # @!attribute description
+    #   @return [String] Optional free-form description of the fraud.
+    class IssuingDisputeFraudDetails
+      attr_accessor :fraud_type, :description
+    end
+  end
+end
diff --git a/lib/checkout_sdk/issuing/issuing_dispute_fraud_type.rb b/lib/checkout_sdk/issuing/issuing_dispute_fraud_type.rb
new file mode 100644
index 0000000..226e4cd
--- /dev/null
+++ b/lib/checkout_sdk/issuing/issuing_dispute_fraud_type.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module CheckoutSdk
+  module Issuing
+    # The type of fraud the cardholder is asserting on an Issuing dispute.
+    # Maps swagger `IssuingDisputeFraudDetails.fraud_type`.
+    module IssuingDisputeFraudType
+      CARD_LOST = 'card_lost'
+      CARD_STOLEN = 'card_stolen'
+      CARD_NEVER_RECEIVED = 'card_never_received'
+      FRAUDULENT_ACCOUNT = 'fraudulent_account'
+      COUNTERFEIT_CARD = 'counterfeit_card'
+      ACCOUNT_TAKEOVER = 'account_takeover'
+      CARD_NOT_PRESENT_FRAUD = 'card_not_present_fraud'
+      MERCHANT_MISREPRESENTATION = 'merchant_misrepresentation'
+      CARDHOLDER_MANIPULATION = 'cardholder_manipulation'
+      INCORRECT_PROCESSING = 'incorrect_processing'
+      OTHER = 'other'
+    end
+  end
+end
diff --git a/lib/checkout_sdk/issuing/schedule_revocation_request.rb b/lib/checkout_sdk/issuing/schedule_revocation_request.rb
deleted file mode 100644
index b29cc66..0000000
--- a/lib/checkout_sdk/issuing/schedule_revocation_request.rb
+++ /dev/null
@@ -1,13 +0,0 @@
-# frozen_string_literal: true
-
-module CheckoutSdk
-  module Issuing
-    # Request body for POST /issuing/cards/{cardId}/schedule-revocation.
-    #
-    # @!attribute revocation_date
-    #   @return [String] ISO-8601 date the card revocation should take effect.
-    class ScheduleRevocationRequest
-      attr_accessor :revocation_date
-    end
-  end
-end
diff --git a/lib/checkout_sdk/issuing/submit_dispute_request.rb b/lib/checkout_sdk/issuing/submit_dispute_request.rb
new file mode 100644
index 0000000..fec99e6
--- /dev/null
+++ b/lib/checkout_sdk/issuing/submit_dispute_request.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+module CheckoutSdk
+  module Issuing
+    # Request body for POST /issuing/disputes/{disputeId}/submit. Maps swagger
+    # `submit-dispute-request`. All fields are optional.
+    #
+    # @!attribute reason
+    #   @return [String] The updated four-digit scheme-specific reason code. If not provided, the
+    #     existing reason code is used.
+    # @!attribute evidence
+    #   @return [Array<Hash>] Evidence for the chargeback, if updated since you created the dispute
+    #     (maps `IssuingDisputeEvidence`).
+    # @!attribute amount
+    #   @return [Numeric] The updated disputed amount, in the minor unit of the transaction currency.
+    #     If not provided, the existing disputed amount is used.
+    class SubmitDisputeRequest
+      attr_accessor :reason, :evidence, :amount
+    end
+  end
+end
diff --git a/lib/checkout_sdk/issuing/update_card_request.rb b/lib/checkout_sdk/issuing/update_card_request.rb
index cee6110..571aaa7 100644
--- a/lib/checkout_sdk/issuing/update_card_request.rb
+++ b/lib/checkout_sdk/issuing/update_card_request.rb
@@ -12,8 +12,16 @@ module Issuing
     #   @return [Integer]
     # @!attribute expiry_year
     #   @return [Integer]
+    # @!attribute activation_date
+    #   @return [String] ISO-8601 date scheduling the card's activation. Supported formats:
+    #     date only `yyyy-mm-dd` (treated as midnight UTC) or date with round hour
+    #     `yyyy-mm-ddTHH:mmZ` / `yyyy-mm-ddTHH:mm±HH:mm`. Maps swagger `IssuingActivationDate`.
+    # @!attribute revocation_date
+    #   @return [String] Date for the card to be automatically revoked, in the form `yyyy-mm-dd`.
+    #     Must be after the current date. Maps swagger `IssuingRevocationDate`.
     class UpdateCardRequest
-      attr_accessor :reference, :metadata, :expiry_month, :expiry_year
+      attr_accessor :reference, :metadata, :expiry_month, :expiry_year,
+                    :activation_date, :revocation_date
     end
   end
 end
diff --git a/lib/checkout_sdk/issuing/update_cardholder_request.rb b/lib/checkout_sdk/issuing/update_cardholder_request.rb
index 9401e75..8ebe12b 100644
--- a/lib/checkout_sdk/issuing/update_cardholder_request.rb
+++ b/lib/checkout_sdk/issuing/update_cardholder_request.rb
@@ -21,12 +21,9 @@ module Issuing
     #   @return [IssuingAddress]
     # @!attribute residency_address
     #   @return [IssuingAddress]
-    # @!attribute document
-    #   @return [IdentificationDocument]
     class UpdateCardholderRequest
       attr_accessor :first_name, :middle_name, :last_name, :date_of_birth,
-                    :phone_number, :email, :billing_address, :residency_address,
-                    :document
+                    :phone_number, :email, :billing_address, :residency_address
     end
   end
 end
diff --git a/lib/checkout_sdk/payments/payments.rb b/lib/checkout_sdk/payments/payments.rb
index 7a9e39e..05f4579 100644
--- a/lib/checkout_sdk/payments/payments.rb
+++ b/lib/checkout_sdk/payments/payments.rb
@@ -192,6 +192,10 @@
 require 'checkout_sdk/payments/setups/account_funding_transaction_recipient'
 require 'checkout_sdk/payments/setups/payment_setup_account_funding_transaction'
 require 'checkout_sdk/payments/setups/blik_payment_method'
+require 'checkout_sdk/payments/setups/bacs_payment_method'
+require 'checkout_sdk/payments/setups/card_present_payment_method'
+require 'checkout_sdk/payments/setups/pay_by_bank_payment_method'
+require 'checkout_sdk/payments/setups/stablecoin_payment_method'
 require 'checkout_sdk/payments/setups/payment_setups_client'
 
 # Payment Flow
diff --git a/lib/checkout_sdk/payments/setups/bacs_payment_method.rb b/lib/checkout_sdk/payments/setups/bacs_payment_method.rb
new file mode 100644
index 0000000..83fe5c7
--- /dev/null
+++ b/lib/checkout_sdk/payments/setups/bacs_payment_method.rb
@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+module CheckoutSdk
+  module Payments
+    # Bacs payment method configuration on a Payment Setup. Maps swagger `Bacs`.
+    #
+    # @!attribute status
+    #   @return [String] (response-only) Payment method status.
+    # @!attribute flags
+    #   @return [Array(String)] (response-only) Diagnostic flags returned by the API.
+    # @!attribute initialization
+    #   @return [String] The initialization type for the payment method.
+    # @!attribute instrument_id
+    #   @return [String] (response-only) The ID of the Bacs instrument used for the payment.
+    # @!attribute account_holder
+    #   @return [Hash] The account holder details (`type`, `first_name`, `last_name`,
+    #     `company_name`, `email`).
+    # @!attribute account_number
+    #   @return [String] The account number of the Bacs Direct Debit account.
+    # @!attribute bank_code
+    #   @return [String] The bank code (sort code) of the Bacs Direct Debit account.
+    # @!attribute country
+    #   @return [String] {CheckoutSdk::Common::Country}
+    # @!attribute currency
+    #   @return [String] {CheckoutSdk::Common::Currency}
+    # @!attribute allow_partial_match
+    #   @return [TrueClass, FalseClass] Whether to allow a partial match of the account holder details.
+    class BacsPaymentMethod
+      attr_accessor :status,
+                    :flags,
+                    :initialization,
+                    :instrument_id,
+                    :account_holder,
+                    :account_number,
+                    :bank_code,
+                    :country,
+                    :currency,
+                    :allow_partial_match
+    end
+  end
+end
diff --git a/lib/checkout_sdk/payments/setups/card_present_payment_method.rb b/lib/checkout_sdk/payments/setups/card_present_payment_method.rb
new file mode 100644
index 0000000..2679164
--- /dev/null
+++ b/lib/checkout_sdk/payments/setups/card_present_payment_method.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+
+module CheckoutSdk
+  module Payments
+    # Card Present payment method configuration on a Payment Setup. Maps swagger `CardPresent`.
+    #
+    # @!attribute status
+    #   @return [String] (response-only) Payment method status.
+    # @!attribute flags
+    #   @return [Array(String)] (response-only) Diagnostic flags returned by the API.
+    # @!attribute track2
+    #   @return [String] The Track 2 data read from card or device.
+    # @!attribute emv
+    #   @return [String] The EMV data read from the card or device.
+    # @!attribute entry_mode
+    #   @return [String] The mode used to capture the card details at the point of sale.
+    # @!attribute pin
+    #   @return [Hash] The encrypted PIN block details (`key_set_id`, `block`, `block_format`).
+    # @!attribute store_for_future_use
+    #   @return [TrueClass, FalseClass] Set to `true` if you intend to reuse the payment credentials
+    #     in subsequent payments.
+    # @!attribute name
+    #   @return [String] The cardholder name.
+    class CardPresentPaymentMethod
+      attr_accessor :status,
+                    :flags,
+                    :track2,
+                    :emv,
+                    :entry_mode,
+                    :pin,
+                    :store_for_future_use,
+                    :name
+    end
+  end
+end
diff --git a/lib/checkout_sdk/payments/setups/pay_by_bank_payment_method.rb b/lib/checkout_sdk/payments/setups/pay_by_bank_payment_method.rb
new file mode 100644
index 0000000..4fe6928
--- /dev/null
+++ b/lib/checkout_sdk/payments/setups/pay_by_bank_payment_method.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+module CheckoutSdk
+  module Payments
+    # Pay by Bank (Open Banking) payment method configuration on a Payment Setup.
+    # Maps swagger `PayByBank`.
+    #
+    # @!attribute status
+    #   @return [String] (response-only) Payment method status.
+    # @!attribute flags
+    #   @return [Array(String)] (response-only) Diagnostic flags returned by the API.
+    # @!attribute bank_id
+    #   @return [String] The identifier of the bank the customer has selected for the payment.
+    # @!attribute action
+    #   @return [Hash] (response-only) The next available action for the payment method
+    #     (`type`, `banks`).
+    class PayByBankPaymentMethod
+      attr_accessor :status,
+                    :flags,
+                    :bank_id,
+                    :action
+    end
+  end
+end
diff --git a/lib/checkout_sdk/payments/setups/stablecoin_payment_method.rb b/lib/checkout_sdk/payments/setups/stablecoin_payment_method.rb
new file mode 100644
index 0000000..cce50c0
--- /dev/null
+++ b/lib/checkout_sdk/payments/setups/stablecoin_payment_method.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+
+module CheckoutSdk
+  module Payments
+    # Stablecoin payment method configuration on a Payment Setup. Maps swagger `Stablecoin`.
+    #
+    # @!attribute status
+    #   @return [String] (response-only) Payment method status.
+    # @!attribute flags
+    #   @return [Array(String)] (response-only) Diagnostic flags returned by the API.
+    class StablecoinPaymentMethod
+      attr_accessor :status,
+                    :flags
+    end
+  end
+end
diff --git a/spec/checkout_sdk/accounts/instrument_details_ach_spec.rb b/spec/checkout_sdk/accounts/instrument_details_ach_spec.rb
new file mode 100644
index 0000000..d9472b3
--- /dev/null
+++ b/spec/checkout_sdk/accounts/instrument_details_ach_spec.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+RSpec.describe CheckoutSdk::Accounts::InstrumentDetailsAch do
+  it 'is an InstrumentDetails' do
+    expect(described_class.new).to be_a(CheckoutSdk::Accounts::InstrumentDetails)
+  end
+
+  it 'serializes all three fields to their swagger keys' do
+    details = described_class.new
+    details.account_number = '12345100'
+    details.routing_number = '026009593'
+    details.account_type = 'savings'
+
+    hash = CheckoutSdk::JsonSerializer.to_custom_hash(details)
+
+    expect(hash['account_number']).to eq('12345100')
+    expect(hash['routing_number']).to eq('026009593')
+    expect(hash['account_type']).to eq('savings')
+  end
+end
diff --git a/spec/checkout_sdk/issuing/issuing_disputes_serialization_spec.rb b/spec/checkout_sdk/issuing/issuing_disputes_serialization_spec.rb
new file mode 100644
index 0000000..ebd9128
--- /dev/null
+++ b/spec/checkout_sdk/issuing/issuing_disputes_serialization_spec.rb
@@ -0,0 +1,124 @@
+# frozen_string_literal: true
+
+RSpec.describe 'Issuing disputes/cards serialization' do
+  describe CheckoutSdk::Issuing::IssuingDisputeFraudType do
+    it 'maps every value to its exact swagger string' do
+      expected = {
+        CARD_LOST: 'card_lost',
+        CARD_STOLEN: 'card_stolen',
+        CARD_NEVER_RECEIVED: 'card_never_received',
+        FRAUDULENT_ACCOUNT: 'fraudulent_account',
+        COUNTERFEIT_CARD: 'counterfeit_card',
+        ACCOUNT_TAKEOVER: 'account_takeover',
+        CARD_NOT_PRESENT_FRAUD: 'card_not_present_fraud',
+        MERCHANT_MISREPRESENTATION: 'merchant_misrepresentation',
+        CARDHOLDER_MANIPULATION: 'cardholder_manipulation',
+        INCORRECT_PROCESSING: 'incorrect_processing',
+        OTHER: 'other'
+      }
+      expected.each do |const, value|
+        expect(described_class.const_get(const)).to eq(value)
+      end
+      expect(described_class.constants.size).to eq(11)
+    end
+  end
+
+  describe CheckoutSdk::Issuing::IssuingDisputeFraudDetails do
+    it 'serializes fraud_type and description' do
+      details = described_class.new
+      details.fraud_type = CheckoutSdk::Issuing::IssuingDisputeFraudType::CARD_STOLEN
+      details.description = 'wallet was stolen'
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(details)
+
+      expect(hash['fraud_type']).to eq('card_stolen')
+      expect(hash['description']).to eq('wallet was stolen')
+    end
+  end
+
+  describe CheckoutSdk::Issuing::CreateDisputeRequest do
+    it 'serializes nested fraud_details' do
+      details = CheckoutSdk::Issuing::IssuingDisputeFraudDetails.new
+      details.fraud_type = CheckoutSdk::Issuing::IssuingDisputeFraudType::COUNTERFEIT_CARD
+
+      req = described_class.new
+      req.transaction_id = 'txn_1'
+      req.reason = '4808'
+      req.fraud_details = details
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(req)
+
+      expect(hash['transaction_id']).to eq('txn_1')
+      expect(hash['reason']).to eq('4808')
+      expect(hash['fraud_details']['fraud_type']).to eq('counterfeit_card')
+    end
+  end
+
+  describe CheckoutSdk::Issuing::EscalateDisputeRequest do
+    it 'serializes nested fraud_details' do
+      details = CheckoutSdk::Issuing::IssuingDisputeFraudDetails.new
+      details.fraud_type = CheckoutSdk::Issuing::IssuingDisputeFraudType::ACCOUNT_TAKEOVER
+
+      req = described_class.new
+      req.justification = 'reason'
+      req.fraud_details = details
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(req)
+
+      expect(hash['justification']).to eq('reason')
+      expect(hash['fraud_details']['fraud_type']).to eq('account_takeover')
+    end
+  end
+
+  describe CheckoutSdk::Issuing::AmendDisputeRequest do
+    it 'serializes all six fields incl. action_response' do
+      details = CheckoutSdk::Issuing::IssuingDisputeFraudDetails.new
+      details.fraud_type = CheckoutSdk::Issuing::IssuingDisputeFraudType::OTHER
+
+      req = described_class.new
+      req.reason = '4807'
+      req.amount = 1500
+      req.evidence = [{ 'evidence_type' => 'proof_of_purchase' }]
+      req.fraud_details = details
+      req.reason_change_justification = 'updated reason'
+      req.action_response = 'answering the requested changes'
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(req)
+
+      expect(hash['reason']).to eq('4807')
+      expect(hash['amount']).to eq(1500)
+      expect(hash['evidence']).to eq([{ 'evidence_type' => 'proof_of_purchase' }])
+      expect(hash['fraud_details']['fraud_type']).to eq('other')
+      expect(hash['reason_change_justification']).to eq('updated reason')
+      expect(hash['action_response']).to eq('answering the requested changes')
+    end
+  end
+
+  describe CheckoutSdk::Issuing::SubmitDisputeRequest do
+    it 'serializes reason, evidence and amount' do
+      req = described_class.new
+      req.reason = '4807'
+      req.evidence = [{ 'evidence_type' => 'proof_of_purchase' }]
+      req.amount = 100
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(req)
+
+      expect(hash['reason']).to eq('4807')
+      expect(hash['evidence']).to eq([{ 'evidence_type' => 'proof_of_purchase' }])
+      expect(hash['amount']).to eq(100)
+    end
+  end
+
+  describe CheckoutSdk::Issuing::UpdateCardRequest do
+    it 'serializes activation_date and revocation_date' do
+      req = described_class.new
+      req.activation_date = '2026-06-01T10:00Z'
+      req.revocation_date = '2027-03-12'
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(req)
+
+      expect(hash['activation_date']).to eq('2026-06-01T10:00Z')
+      expect(hash['revocation_date']).to eq('2027-03-12')
+    end
+  end
+end
diff --git a/spec/checkout_sdk/issuing/issuing_extras_spec.rb b/spec/checkout_sdk/issuing/issuing_extras_spec.rb
index 10167c4..4748e5a 100644
--- a/spec/checkout_sdk/issuing/issuing_extras_spec.rb
+++ b/spec/checkout_sdk/issuing/issuing_extras_spec.rb
@@ -35,23 +35,6 @@
     end
   end
 
-  describe '#schedule_card_revocation' do
-    it 'POSTs issuing/cards/{id}/schedule-revocation' do
-      req = CheckoutSdk::Issuing::ScheduleRevocationRequest.new
-      expect(api_client_mock).to receive(:invoke_post)
-        .with('issuing/cards/crd_1/schedule-revocation', 'secret_key', req).and_return('r')
-      expect(client.schedule_card_revocation('crd_1', req)).to eq('r')
-    end
-  end
-
-  describe '#cancel_scheduled_card_revocation' do
-    it 'DELETEs issuing/cards/{id}/schedule-revocation' do
-      expect(api_client_mock).to receive(:invoke_delete)
-        .with('issuing/cards/crd_1/schedule-revocation', 'secret_key').and_return('r')
-      expect(client.cancel_scheduled_card_revocation('crd_1')).to eq('r')
-    end
-  end
-
   describe '#simulate_refund' do
     it 'POSTs issuing/simulate/authorizations/{id}/refunds' do
       req = CheckoutSdk::Issuing::SimulateRefundRequest.new
@@ -163,6 +146,28 @@
         .with('issuing/disputes/dsp_1/escalate', 'secret_key', req).and_return('r')
       expect(client.escalate_issuing_dispute('dsp_1', req)).to eq('r')
     end
+
+    it 'POSTs issuing/disputes/{id}/amend' do
+      req = CheckoutSdk::Issuing::AmendDisputeRequest.new
+      req.reason = '4807'
+      expect(api_client_mock).to receive(:invoke_post)
+        .with('issuing/disputes/dsp_1/amend', 'secret_key', req).and_return('r')
+      expect(client.amend_issuing_dispute('dsp_1', req)).to eq('r')
+    end
+
+    it 'POSTs issuing/disputes/{id}/amend with nil body' do
+      expect(api_client_mock).to receive(:invoke_post)
+        .with('issuing/disputes/dsp_1/amend', 'secret_key', nil).and_return('r')
+      expect(client.amend_issuing_dispute('dsp_1')).to eq('r')
+    end
+
+    it 'POSTs issuing/disputes/{id}/submit (deprecated)' do
+      req = CheckoutSdk::Issuing::SubmitDisputeRequest.new
+      req.reason = '4807'
+      expect(api_client_mock).to receive(:invoke_post)
+        .with('issuing/disputes/dsp_1/submit', 'secret_key', req).and_return('r')
+      expect(client.submit_issuing_dispute('dsp_1', req)).to eq('r')
+    end
   end
 
   describe '#get_transactions and #get_transaction' do
diff --git a/spec/checkout_sdk/payments/setups/setup_payment_methods_serialization_spec.rb b/spec/checkout_sdk/payments/setups/setup_payment_methods_serialization_spec.rb
new file mode 100644
index 0000000..bff3122
--- /dev/null
+++ b/spec/checkout_sdk/payments/setups/setup_payment_methods_serialization_spec.rb
@@ -0,0 +1,104 @@
+# frozen_string_literal: true
+
+RSpec.describe 'Payment Setups payment-method configs serialization' do
+  describe CheckoutSdk::Payments::BacsPaymentMethod do
+    it 'serializes its fields to their swagger keys' do
+      pm = described_class.new
+      pm.status = 'available'
+      pm.flags = %w[flag_a]
+      pm.instrument_id = 'src_wkq7552u245upl5h75x24554xy'
+      pm.initialization = 'setup'
+      pm.account_holder = { 'type' => 'individual', 'first_name' => 'John' }
+      pm.account_number = '12345678'
+      pm.bank_code = '200000'
+      pm.country = 'GB'
+      pm.currency = 'GBP'
+      pm.allow_partial_match = true
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(pm)
+
+      expect(hash['status']).to eq('available')
+      expect(hash['flags']).to eq(%w[flag_a])
+      expect(hash['instrument_id']).to eq('src_wkq7552u245upl5h75x24554xy')
+      expect(hash['initialization']).to eq('setup')
+      expect(hash['account_holder']).to eq({ 'type' => 'individual', 'first_name' => 'John' })
+      expect(hash['account_number']).to eq('12345678')
+      expect(hash['bank_code']).to eq('200000')
+      expect(hash['country']).to eq('GB')
+      expect(hash['currency']).to eq('GBP')
+      expect(hash['allow_partial_match']).to be(true)
+    end
+  end
+
+  describe CheckoutSdk::Payments::CardPresentPaymentMethod do
+    it 'serializes its fields to their swagger keys' do
+      pm = described_class.new
+      pm.status = 'available'
+      pm.flags = %w[flag_a]
+      pm.track2 = 'track2-data'
+      pm.emv = 'emv-data'
+      pm.entry_mode = 'contactless'
+      pm.pin = { 'key_set_id' => 'ks_1', 'block' => 'b', 'block_format' => 'iso0' }
+      pm.store_for_future_use = true
+      pm.name = 'John Smith'
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(pm)
+
+      expect(hash['status']).to eq('available')
+      expect(hash['flags']).to eq(%w[flag_a])
+      expect(hash['track2']).to eq('track2-data')
+      expect(hash['emv']).to eq('emv-data')
+      expect(hash['entry_mode']).to eq('contactless')
+      expect(hash['pin']).to eq({ 'key_set_id' => 'ks_1', 'block' => 'b', 'block_format' => 'iso0' })
+      expect(hash['store_for_future_use']).to be(true)
+      expect(hash['name']).to eq('John Smith')
+    end
+  end
+
+  describe CheckoutSdk::Payments::PayByBankPaymentMethod do
+    it 'serializes bank_id, status, flags and action' do
+      pm = described_class.new
+      pm.bank_id = 'ob-natwest'
+      pm.status = 'available'
+      pm.flags = %w[flag_a]
+      pm.action = { 'type' => 'select_bank', 'banks' => [{ 'bank_id' => 'ob-natwest' }] }
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(pm)
+
+      expect(hash['bank_id']).to eq('ob-natwest')
+      expect(hash['status']).to eq('available')
+      expect(hash['flags']).to eq(%w[flag_a])
+      expect(hash['action']).to eq({ 'type' => 'select_bank', 'banks' => [{ 'bank_id' => 'ob-natwest' }] })
+    end
+  end
+
+  describe CheckoutSdk::Payments::StablecoinPaymentMethod do
+    it 'serializes its response fields' do
+      pm = described_class.new
+      pm.status = 'available'
+      pm.flags = %w[flag_a]
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(pm)
+
+      expect(hash['status']).to eq('available')
+      expect(hash['flags']).to eq(%w[flag_a])
+    end
+  end
+
+  describe 'order amount_allocations (reuses Common::AmountAllocations)' do
+    it 'serializes id, amount, reference and commission' do
+      allocation = CheckoutSdk::Common::AmountAllocations.new
+      allocation.id = 'ent_w4jelhppmfiufdnatam37wrfc4'
+      allocation.amount = 1000
+      allocation.reference = 'ORD-5023-4E89'
+      allocation.commission = CheckoutSdk::Common::Commission.new
+
+      hash = CheckoutSdk::JsonSerializer.to_custom_hash(allocation)
+
+      expect(hash['id']).to eq('ent_w4jelhppmfiufdnatam37wrfc4')
+      expect(hash['amount']).to eq(1000)
+      expect(hash['reference']).to eq('ORD-5023-4E89')
+      expect(hash).to have_key('commission')
+    end
+  end
+end