| Segment | Ebene | Beschreibung | Opt/Mand. |
|---|
| UNH | 0 | 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 | Mandatory |
| BGM | 0 | A segment for unique identification of the Advice on pending works number and type of document. | Mandatory |
| RFF | 0 | A segment to give prior references of the whole document, for example, project number or contract number, and authorization references if required. | Mandatory |
| DTM | 0 | A segment specifying the dates that apply, e.g. forecasted date to start works, duration of the project and/or forecasted date of end of the works. | Mandatory |
| SG1 | 0 | SG1 | Mandatory |
| NAD | 1 | 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. | Mandatory |
| SG2 | 1 | SG2 | Mandatory |
| CTA | 2 | A segment giving additional contact information relating to the party specified in the NAD segment, e.g. contact name, department or function. | Mandatory |
| COM | 2 | A segment to identify a communication number of the previous information given in CTA (phone, fax, telex, etc.). | Optional |
| LOC | 0 | A segment, which enables the sender to specify in some occurrences the location(s) of the project. | Mandatory |
| FTX | 0 | A segment to specify the nature of the works, in coded and/or clear form. | Mandatory |
| DOC | 0 | 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. | Optional |
| CNT | 0 | A segment enabling controls, for example, the number of documents attached to CONAPW. | Optional |
| AUT | 0 | A segment to provide an authentication of the message. | Optional |
| UNT | 0 | A service segment ending a message, giving the total number of segments in the message (including the UNH & UNT) and the control reference number of the message. | Mandatory |
