Rollback Subcontractor allows you to rollback the payrun data of a subcontractor whose YTD values have already been updated and the CIS monthly return has not been submitted to the HMRC for that period. 
This function can be used to cancel an subcontractor's previous pay period so that you can then re-run the period with correct data.

Warning :Please note, when you run the rollback, all the pay data will be PERMANENTLY deleted up until the point you rollback to. You are advised to keep copies of any  original printouts for future reference if necessary