A common cause of this error is a reserved character in the transaction's Description field, such as a pipe character ( | ). Check your transactions and remove or replace any unexpected characters.
The error may not affect all transactions in the selection. To isolate the affected transaction:
Deselect about half of the transactions to be processed and click Process. If the Process Remittance BACS pop-up appears, these have passed validation. Process them if required, or close the pop-up using the X in the top right corner.
If the error still appears, reduce the selection again and retry. Continue until the affected transaction is identified.
Once identified, use the Purchase Transactions Enquiry screen to check for unexpected characters — specifically in the Header Reference and Description fields.
If this does not resolve the issue, contact the support team to investigate. If you have trouble reaching us, see Get support in Access Financials.