How does “Set next: GL Exclusions and P&L Mapping” work on the Accounts settings page?

A group's consolidated figure is wrong until the balances that cancel between its entities are taken out — a loan from one company to another, the trading account between them. GL Exclusions is that list, and Financial Reports, the management pack and the drafts all read it. P&L Mapping decides the layout: a GL code matches a rule by prefix, exact code or range and lands in that category; the platform's defaults cover a standard chart, so most accounts only add a rule where their own coding differs. Both tabs read the chart the sync brought in, so connect the ledger first. Where: Accounts settings (/accounts/settings).