SAP Message RU051 - Orders of the order type & cannot be confirmed

Diagnosis
You want to confirm a network/order of the order type &V1&. However,this order type is allocated to an order category whose confirmationis not intended in this transaction.

Example
You try to confirm a network using a transaction intended forconfirming production orders. Since networks and production orders areassigned to different order categories, the system issues an errormessage.

Procedure
Enter an order of an order type that is intended for this transaction.