Absence Case creation fails with error:The value of the attribute PersonAbsenceEntryId isn't valid

Summary:

Has anyone resolved a similar issue where Absence Case creation fails with the error: "The value of the attribute PersonAbsenceEntryId isn't valid"

• Employee has undergone an Entity Transfer.
• Employee has multiple Periods of Service.
• Two valid Sick Leave (T) absences exist and are Submitted/Approved.
• The absences belong to the employee's active assignment and active Period of Service.
• The Medical Leave for Self category is correctly configured and includes Sick Leave (T) as an associated absence type.

However, when creating an Absence Case, the expected Sick Leave absences are not returned in the Associated Absences selection list, and submission fails with: