I am required to assign Bank information including Bank Key, Bank Account # and IBAN Number in vendor master data,
System is accepting all these data but at the time of saving vendor master system shows this message.
Message no. R1304
Field 'IBAN' with short description 'IBAN (International Bank Account Number)' has been set within Customizing as a required field. There is, however, no entry in this field.
Enter a value for field 'IBAN'.
PS: I am on S/4 HANA 1709