Whenever several Documents are sent, associated in a given statement, the number linking the various documents must be included in this field. For example, a valued list.

Use the ProjectReference element to model this information.

Elements

Restrictions

• You must provide provide a reference to the batch that includes the various documents in the corresponding multi-document logic for Portuguese B2G documents.

Example

<ubl:Invoice>
    <!-- Code omitted for clarity -->
    <cbc:ProjectReference>ABC554433</cbc:ProjectReference>
    <!-- Code omitted for clarity -->
</ubl:Invoice>