Article 57
1. If actual recovery has not taken place by the due date stipulated in the debit note, the accounting officer shall inform the authorising officer responsible and immediately launch the procedure for effecting recovery by any means offered by the law, including, where appropriate, by offsetting and, if this is not possible, by enforced recovery. 2. The accounting officer shall recover amounts by offsetting them against equivalent claims that Europol has on any debtor who himself or herself has a claim on Europol that is certain, of a fixed amount and due, provided that offsetting is legally possible.