Account Payment Batch Processing

This module adds a batch payment screen on top of the standard Register Payment wizard. From a list of invoices or bills you select several records and use the Batch Payments action; the wizard then shows one line per invoice with its partner, balance, amount to pay and the difference.

• A button "Auto-Fill Pay Amount" fills the amounts automatically from the balances.
• The batch total is compared with the sum of the invoice amounts; if they do not match, a validation error blocks the payment.
• For each line you can choose to keep the invoice open or mark it as fully paid, and when there is a difference you must give a write-off account and a note.
• Adjustment reasons (a small reference list with a code, an account and a text) can be attached to a line and are used in the payment memo.
• The amount in words is computed for cheque printing.

Only posted invoices that are not paid or partly paid can be batched, and all selected records must share the same payment mode, the same currency and the same type (you cannot mix customer invoices and vendor bills). After confirmation, one payment per partner is created and posted, and the invoices are reconciled; the resulting payments are shown in a read-only list grouped by partner.