You can change an installment plan and thus:
Delete installments or add further installments
Change the due date and the amount of each individual installment receivable, provided the installment receivable has not yet been paid.
You can only process an installment plan that has not been deactivated and not been cleared. If you want to change the amounts in an installment plan, you must ensure that the total of the installment receivables always corresponds to the total of the source receivables.