Errors and exceptions for net bill processing

All error and exceptions that occur during net billing processing through the SupplierInvoice BOD are displayed in EDI Electronic Transaction Control Center Entry. Each error and exceptions has an associated event that can be activated in Event Manager. The events are only triggered by SupplierInvoice API call. This call loads vendor data into internal tables so that the purchase orders can be costed in Vendor Invoice Center Entry.

Net bill processing does not occur if these errors occur:

The PDER record cannot be found.
The PDER record is not in the Entered stage, which indicates that the sales order line was invoiced.
The net bill feature is not activated for the vendor on the purchase order.
The purchase order line is tied to multiple sales order lines.
The sales order line that is associated with the PDER record is not active.

Net bill processing occurs if these exceptions occur:

The purchase order line was previously received.
The PDER record is in the Entered stage, but the purchase order line has been received. The cost on the purchase order line is not updated, but all other net bill updates are performed. The message is displayed:
```
PO line Received, Order line not invoiced or canceled
```
Exceptions in Net Billed Amounts
Differences between the net bill amount in the sales invoice and the foreign rebate amount on the PDER record are reported. This message is displayed:
```
Net Billing Amount Does Not Match Foreign Rebate
```