Throughout Australasia it is a requirement where the work is part of a construction claim to include a reference to the claim or to the specific payment terms of your invoices.
In NZ, the legislation includes the Construction Contracts act, and in Australia, there are the various Security of payments acts which govern progress claims.
You can upload a default document from the Administration pages within Abtrac to ensure these payment claim terms attach to every invoice sent from AbtracOnLine.