SAP Message REXCRACH008 - Due date &1: total cash flow amount differs from ISR amount(see long text

Diagnosis The invoice amount does not agree with the balance of the cash flowitems for the due date. Procedure Correct the amount. If you want to allow the difference, then set the Allow Difference Between ISR Amountand Cash Flow Balance indicator. Or create a one-time condition bychoosing Condition.