Reverse Termination Approval Getting Failed

The admin has performed a Reverse Termination for an employee without encountering any errors during the process. Upon submission, the transaction was successfully routed to the relevant approvers as per the configured approval flow.

However, once the approval is provided by the respective representatives, the transaction fails to complete and does not reflect as processed in the system.

Has anyone experienced a similar issue, or could you suggest what might be causing the failure after approval? Are there any known processes that could be impacting this behavior?

Any guidance would be greatly appreciated.