Page 1. V1.4 12/07/23. UD0260. Page 1 of 519. This Document is uncontrolled when printed unless over stamped “CONTROLLED DOCUMENT" TRAKAWEB VERSION 4 USER GUIDE UD0260
A formal document titled exists as a detailed critique and write-up regarding Form 5500-SUP. Source : Summary - ARA Advocacy Download File 15-02-23-digit.pdf
Technical documentation from the UK Cabinet Office dated provides a write-up on how suppliers should handle registration fields. It specifically mentions using an 8-digit number ("00000000") as a dummy entry for foreign subcontractors where validation prevents submission. Source : Supplier Registration Service - Cabinet Office Other Potential References Page 1