-
AES C 0505 – For countries in CL505 (countries without mandatory postcodes), postcode is optional ("O") for parties like exporter, declarant, exit carrier, consignee, consignor, locations; required ("R") otherwise.
-
AES C 0511 – Correlation identifier required ("R") for message types in CL610 (e.g., response messages), not allowed ("N") for CL385 (e.g., request messages), optional ("O") otherwise.
-
AES C 0548 – If UBR cross-check fails ('0'), combined nomenclature and net mass cross-check results not allowed ("N"); otherwise at least one required ("R").
-
AES C 0549 – If UBR cross-check fails ('0'), rejection reason required ("R"); not allowed ("N") otherwise.
-
AES C 0551 – If net mass cross-check fails ('0'), rejection reason required ("R"); "N" otherwise.
-
AES C 0556 – Exchange rate optional ("O") if invoice currency present; not allowed ("N") otherwise.
-
AES C 0557 – Inland mode of transport is "N", "O", or "R" based on whether presentation office differs from exit, additional type, declaration type, and procedure.
-
AES C 0558 – Deferred payment optional ("O") if methodOfPayment E or G; "N" otherwise.
-
AES C 0561 – Warehouse required ("R") for 'CO' with requested 76/77, or previous 71,76,77; optional ("O") otherwise.
-
AES C 0569 – If numberOfSeals >0, seal details required ("R"); "N" otherwise.