HTG interface specifications have been expanded in release 1.1

With the publications of release 1.1, the interface specifications for the Trade and Transport Gateway have been expanded with a document 'Interface description HTG Message with extra attachment' for the use of an extra multipart/mixed MIME part ('attachment'). The other documents have been updated only with references to this document.

This expansion will be available on September 14, 2020 in the pre-production environment and on October 20, 2020 in the HTG production environment.

The use of the additional attachment is only permitted for a message flow where the specific specifications indicate that an extra attachment can be included.
This also applies to the time when.