I'm facing an issue while importing historical cases through Import Management because of Category

Issue
During the Validate Data step of the Case import, the system returns the following error for each row:

Attribute CategoryName is not selected in CaseVO_XXXX, operation: get/setAttribute

Details

• We are importing historical cases into Case Management
• CategoryName is populated in the source file
• CaseCategoryId is also populated in the source file
• the fields are mapped in Import Management
• however, during Validate Data, the application throws the above error for all rows

What We Tested

1. Populated both CategoryName and CaseCategoryId
2. Confirmed field mapping in Import Management
3. Retested with the same result
4. The issue occurs for every row during validation