The Bank Giro account number filled when using this payment type.
When getting this error, you are probably trying to validate a payment journal, where you are using a Bank Giro account number.
When using Bank Giro account number, there are certain things that must be met:
If it is not possible to comply with these requirements, you need to select another payment type for the current transfer.
Do you need some help, you can always raise a support case here
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