Refund status correction allows a second update when paid ECS refunds revert to unpaid, ensuring accurate AO visibility. Enhancement of the OLTAS module permits a second status update for refund banker ECS transactions originally uploaded as PAID but later returned as UNPAID due to account errors or closure, enabling assessing officers to view corrected refund status. Technical steps require two full backups, suspension of users and schedulers during execution, downloading and running the specified patch from the given server and directory, and copying or backing up other executables on the file server; centres must report implementation status as instructed.