pain.001 Error Reference
Common reasons pain.001 files are rejected by banks, with XML examples and fixes.
CtrlSum Mismatch in pain.001
CtrlSum mismatches are among the most common pain.001 rejection causes. Learn what CtrlSum is, why it fails even when your math looks correct, and how to fix it.
NbOfTxs Mismatch in pain.001
NbOfTxs mismatches cause silent pain.001 rejections. Learn what the transaction count field means, the common off-by-one mistakes, and how to compute it correctly.
Unsupported Characters in pain.001 Files
Bank networks and payment processors restrict which characters are allowed in pain.001 name and address fields. Accented letters, smart quotes, and special symbols cause silent rejections.