The general ledger holds every financial transaction, each recorded as balanced debits and credits to accounts in the chart of accounts. The profit and loss statement, balance sheet and cash flow statement are all built from it.
In many distribution businesses the ledger lives in a separate accounting package, fed by exports from the operational system. The gap between the two is where reconciliation work and month-end surprises come from.
APFoodz includes a full double-entry general ledger that posts as orders, receipts and payments happen.