RM4194 | RO instructions: What to do if you use the `AP' procedure
From HM Revenue & Customs · Repayment Claims Manual
If you can use the `AP’ procedure
put the file on B/F for a reply repay the full amount due. If the reply to the `AP’check shows that the figures on a voucher are wrong make a further repayment or deal with the over- repayment.
which vouchers to confirm
where to send them
which covering forms or memos to prepare and attach to the vouchers. The release officer or posting officer will issue the forms or memos after repayment