ID1 is a formal verification process
The ID1 process is used in certain property-related matters to verify identity in the prescribed format. It is not just a general identity check.
Bring the correct originals
The appointment is smoother when the correct original identification and supporting documentation are available at the outset.
Check any receiving-party instructions
Where the receiving body has given detailed instructions, it is sensible to bring them so the verification can be completed in the required form.