Action: GlideList Comparator

[shivamvish160]

🧭 GlideList Comparator – Flow Designer Action

📌 Overview

The GlideList Comparator is a custom Flow Designer action for ServiceNow that compares two GlideList fields on a single record and returns:

• Items only in List A
• Items only in List B
• Items common to both lists

This action is useful for scenarios such as skill gap analysis, access control validation, and group-role alignment.

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🔧 Inputs

Input NameTypeDescriptionrecord_sys_idStringSys ID of the record to comparetable_nameStringName of the table containing the record| list_a_field | String | First GlideList field name (e.g., roles) |
| list_b_field | String | Second GlideList field name (e.g., groups) |

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📤 Outputs

Output NameTypeDescriptiononly_in_aStringItems only in List Aonly_in_bStringItems only in List B| common_items | String | Items present in both lists |
| error | String | Error message if record not found |

[github-actions]

✅ Valid PR for ActionPack

Thank you for your contribution. This PR complies with the CONTRIBUTING.md.
A maintainer will review this shortly. In the meantime, Happy Hacking!

[rohi-v]

Action Looks Good, Please add outputs for failure status in your 'Error Evaluation' step if step1 fails.

[shivamvish160]

Thanks for the feedback
@rohi-v Added the required checks
Please validate

[rohi-v]

Looks Good, Thank You for contribution.