Organisation
The letterhead every statutory paper prints — the PCN, the contractor's invoice, the subcontractor payment certificate — and the office invoice sequence. This is org identity as data: nothing here is hardcoded anywhere.
Organisation
Letterhead
Also written to the organisation record
e.g. Company formed in 2004
Invoicing
The office sequence continues from the highest number on record; this is only the floor (Drumlargan's ledger stood at 766 when the system took over).