How does “A project code is the tracking-option string” work on the Tracking & Project Codes page?

Code plus name is what Xero sees as the option, so the register holds the facts behind it — client company, accounts company, year, VAT status, type and address — once, and pushes the string to the organisations that need it. The near-duplicate resolver exists because a hyphen typed in one organisation and a space in another are two options to Xero and one project to everyone else; keeping one spelling renames the rest. Main Projects is a read-time overlay for reports: grouping options into a real project changes how spend rolls up and nothing in Xero. Where: Tracking & Project Codes (/accounts/tracking-harmonisation).