When an Incoming Payment is added, SAP Business One first checks that at least one payment means (cash, cheque, bank transfer, credit card, etc.) has been entered. It then verifies that the total entered in the Payment Means window equals the payment amount that results from the invoices selected. If either control fails, the system blocks posting and raises the message shown in the screenshot.

C. Exchange-rate control is performed when the foreign-currency invoice is created; an Incoming Payment posts as long as the day’s rate exists, otherwise a specific “Exchange rate is missing” error appears.

D. SAP Business One allows invoices to be paid before due date; due status is informational only and does not prevent posting.

1. SAP Business One 10.0 Financials / Banking Documentation

section “Incoming Payments – Payment Means”

pp. 491-492: “Payment cannot be added unless at least one payment means exists and the total of payment means equals the payment amount.”

2. SAP Learning Hub course TB1200 (SAP Business One – Logistics & Accounting)

Unit “Manual Incoming Payments”

Lesson “Posting Rules”

slide 14: validation of payment means presence and total equality prior to Add.

3. SAP Help Portal

SAP Business One 10.0 → Banking → Incoming Payments

“Prerequisites” paragraph 3 (Doc ID SBC100FINIPAY10): payment means required; total must match document total.