A service segment starting and uniquely identifying a message. The message type code for the Advice on pending works message is CONAPW. Note: Advice on pending works messages conforming to this document must contain the following data in segment UNH, composite S009: Data element 0065 CONAPW D A UN
A segment identifying names and addresses and their function relevant for the whole advice on pending works. In the construction industry parties involved are e.g. the contractor, the designer, the client.
A segment to specify which other documents (drawing organization, circulation list, plans, etc.) are to be sent and processed in conjunction with CONAPW, and what is the communication channel used to transfer them.