Acceptance and release
In Poland's AES/ECS2 PLUS, CC528C records acceptance of the declaration and assignment of an MRN. CC529C records release for export by the office of export. The former IE529 is a release message, not an advance notification of exit or proof that the goods have left the EU.
Exit result
The office of exit supervises departure and sends its result to the office of export. The office of export then sends CC599C to the declarant. Read the result code: B1 can indicate refusal to allow exit. Terminal gate-in and loading are different events.
If confirmation is missing
Send the MRN, documents and transport history to the party responsible for clearance. CloseMRN can review available port statuses and recommend next steps. Formal customs action on another party's declaration requires proper authority.
PUESC: AES/ECS2 PLUS instructions