Changing Terms of Payment and Cash Discount Data 
Changing Terms of Payment and Cash Discount Data
Use
You can change the terms of payment and the data on cash discount in the document or in the line items. You can change the document or line items in a customer or vendor account, or several line items for one account type in one step.
Note the following cases where the terms of payment and cash discount amount can no longer be changed in the document. This is irrespective of your definitions for changing fields.
a) Special Features of Invoice-Related Line Items
If there is an invoice reference, you cannot change the terms of payment in line items. The fields are ready for input so that you can change the cash discount data at the same time as you cancel the invoice reference. However, if you do not cancel the invoice reference, when you choose
If you change the terms of payment in the invoice, the current terms of payment are not copied into the invoice-related document. If you require this, you must copy the terms of payment into the line item again by entering
* in the field Invoice ref..For automatic payment runs and when making payments manually, the system always uses the current terms of payment from the invoice to which you make a reference.
b) Effects on Line Item Interest Calculation
Several reports are available in the FI system for calculating interest on overdue items. These reports calculate interest on the items that have been paid after the due date for net payment or that have not yet been paid. Since the system calculates the due date for net payment from the terms of payment, changes to the terms of payment also affect the calculation of interest on line items.
After you change the terms of payment you should therefore check whether you need to cancel any interest already debited by the system.