TCM0305200 - Tax Credits Manual - HMRC internal manual
Check the TC648 to see if any arrears of CTC have been paid If the TC648 shows that no arrears of CTC have been paid, go to Step 6 If the TC648 shows that arrears of CTC have been paid inform the EU Member State that a reimbursement is not possible using an E001 where the request was made on an E-form a UK-PL if the request was from Poland Follow the guidance European Union Member States contact - TCM0305100 send the documents to storage, follow the guidance in TCM0074140 Note: Where the request was made using a SED F012 or F013 please contact your Technical Advice Line Officer (TALLO)