Auto-number seed setting logic should check the current highest value

[mjahlv]

Is your feature request related to a problem? Please describe

Currently when a seed value is changed there is no check to see if the new seed value is lower than the old seed value. Because auto-number attributes do not enforce unique values, this runs the risk of duplicate values if an auto-number seed is set lower than the previous value.

Describe the solution you'd like

• Logic that checks if the desired seed value is lower than what is in the current environment and prevents the seed being set and outputs a warning/error to the log file.
  • This will require a query for the last created record that uses the auto-number attribute
• An optional boolean parameter for the ImportConfig.xml called forceseedsetting that can be used to override the logic
  • Information should be logged to indicate when the seed has been set because of an override
• Tests to validate the logic and that the values have not been changed in the target environment unless the forceseedsetting parameter is provided.

Additional context

The auto-number manager tool from XRM Toolbox has logic that can query and parse the current auto-number value: https://github.com/rappen/AutoNumManager/blob/16a19098465a454f98db28b96316f538497ca1cd/AutoNumMgr.cs#L479