Account Links
Tells every automatic posting which account is "Sales," which is "Cash," which is "VAT."
What it does
Maps the system's fixed account roles — Sales, Purchases, VAT (input and output), Cash, Cheques-in-hand, and more — to actual nodes in the chart of accounts.
How it works
Link each role once
Double-click a role and pick the account it should resolve to.
The problem it solves
This is the one setup step that makes automatic posting from Sales, Purchase, POS, and Payroll possible at all — without it, those domains have nowhere to post to. It's the wiring between the operational side of the ERP and its books.