Issue

This error appears during a CMiC to Core HR data sync and indicates an issue with an employee’s federal tax record in CMiC.

When you see:

"Core HR does not support Null values for FederalFilingStatus"

It means that the federal filing status for an employee is either:

• Missing entirely (blank), or
• Entered in a format not recognized by the integration tool.

If this error occurs, the employee’s federal tax record will not sync from CMiC to Core HR until corrected.

Cause

Core HR requires a valid, two-digit code for the Federal Filing Status field. If this value is missing or incorrectly formatted in CMiC, the sync will fail for that record.

Resolution

Follow these steps to correct the federal filing status in CMiC:

1. Log in to CMiC
2. Search for and open the employee’s history record
3. Navigate to the Tax tab
4. Insert a new record
5. Update the Federal Filing Status field with the correct two-digit code (must match codes set up in CMiC)
6. Save your changes

After Resolution

After saving the record:

• The error should be resolved.
• The corrected data will sync automatically during the next data sync execution.

Key Points to Remember

• The federal filing status cannot be blank.
• Use only the valid two-digit codes configured in CMiC.
• No further action is needed in Core HR—the update is handled via the sync.