What is the Chart of Accounts Harmonisation page for?

Every account across every Xero organisation in the group, as an organisation-by-account grid, measured against a benchmark — the standard's slot where one exists, otherwise what most of your organisations already do. Each difference is a suggestion (rename, fix the code, change the type, create the account where it is missing, archive a duplicate) applied in place; the VAT rates tab does the same for tax rates. Xero changes only when you apply one, and the History tab records every change made. You enter: The standard, if you want one: seed it from the organisation whose chart is closest to right, then edit a slot's name, code, type and compare policy, and the registry of names each slot recognises; Comparison groups of organisations (holding companies, trading companies) so the chart compares like with like, and which organisations are off the chart altogether; A decision per difference: apply the suggestion, reject it, assign the account to another row, mark a row company-only, choose a number by hand, or merge two rows; A new account, created in the organisations you pick; the harmonised name for a family of VAT rates. Saral fills: The grid: every account each organisation carries, matched to its benchmark row, with harmonised, drift, missing somewhere and needs-a-person counts, grouped by class or type in statement order; The suggestion in each cell and the work queue of all of them; which need a confirm (a recode or retype re-files history, and crossing P&L and Balance Sheet restates reports) and which Xero refused, read back as locked; New in Xero: accounts created directly in Xero in the last 30 days, re-matched once per visit and flagged for a decision; number-sequence moves where another account holds the standard's code (the occupant moves one step down, 652 to 652.01, and the account takes 652); VAT rate families — rates that do the same thing in Xero whatever each organisation calls them — and the rename each organisation needs. It produces: Accounts renamed, recoded, retyped, created or archived in Xero, each on a click, with Saral's own ledger healed to the new code so history re-files on both sides; The History ledger: when, which organisation, the action, from and to, applied or failed, and Xero's note; One group chart, so consolidated reports and the audit file line up account for account. Where the settings live: The organisations on the chart, and which are excluded, are managed from the Organisations chip on the Chart tab; the Xero connections themselves are Settings → Data & integrations → Xero sync & coverage. The standard, its blocks and slots are edited on this page's Standard tab and nowhere else. The GL register that other modules code against is Settings → Reference data; it reads the same accounts this page harmonises. Applying a change needs the Admin role; the chart itself is open to the Accounts view key.