OptionSetId cannot be changed. EnumAttributeInfo.AttributeDescription.OptionSetId

In CRM 2011, While merging some customization we were getting error  that OptionSetId Can not be changed. 

OptionSetId cannot be changed. EnumAttributeInfo.AttributeDescription.OptionSetId(2806db8c-368a-42d5-8cdd-b3d3538580de) != ab8567b8-9e4e-e411-af60-080027314af2


  1. For Fixing error first we need to find the optionset that’s changed. (In SQL Server Management studio run “select name from optionsetview where optionsetid = ‘ab8567b8-9e4e-e411-af60-080027314af2” where highlighted part is second guid in error)
  2. Remove dependencies in CRM like field on form, views and then delete optionset field.
  3. Re-import solution.

This I had to do couple of times as there were multiple optionsets that were deleted and recreated.

Thanks to Becky Cote for the solution.

Import Unmanaged Solution error OptionSetId cannot be changed.

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