Process / protocol

Duplicate messageId after acceptance (HTTP 400 with feedback)

Symptom

The receiver answers HTTP 400 with a feedback message (statusType 0) to a message that looks correct in content.

Cause

A previously accepted message with the same messageId was sent again, for example the final NAV of message 13 with the messageId of the preliminary one. Release 2027 prescribes that a reused messageId after acceptance is rejected and requires human coordination.

Fix

Give every message a new messageId. If it is a correction of an accepted message: consult the receiver first and refer to the original message with originalMessageId. Message function 54 is not meant for a correction: it stands for sending unchanged content again.

{ "commonTechnical": [ { "messageId": "00555B-202609-NAV" } ], "commonFunctional": [ { "function": "01" } ] }

{ "commonTechnical": [ { "messageId": "00555B-202609-NAV-FINAL" } ], "commonFunctional": [ { "function": "54", "originalMessageId": "00555B-202609-NAV" } ] }

Check your own message for this and all other errors with the free validator: schema, code lists and consistency checks in one report. Validate a message