A standard field in the profile is the external ID type. The external ID type defines how Trading Networks identifies a corporation within a message or document. That is, Trading Networks uses the external ID within a document to determine the document's sender and receiver. For example, a corporation that sends a document might place its D-U-N-S number within the field of the document that represents the sender.

Trading Networks provides several external ID types (for example, DUNS for a D-U-N-S number). In addition, 1SYNC Module provides the following external ID types that you must include in your profiles: