SAP Message VHUMI015 - Reservation &1 is not defined in order &2

Diagnosis
The system cannot assign reservation &V1& to order &V2&. Check whetherthe order number and the reservation number are correct.

System Response

Procedure

Checking the reservation using the order number
From the inital screen, choose Logistics -> Production process ->Process order.
Choose Process order -> Display.
Enter the order number for the production order.
Choose Goto -> Header. The Display Process Order: Headerscreen appears.
Choose the Assignment tab page. Here you find the reservationnumber for your production order.
RESET N1

Checking the order number using the reservation number
From the initial screen, choose Logistics -> Material management ->Inventory management.
Choose Inventory management from Reservation -> Display.
Enter the reservation number in the Display Reservation: InitialScreen dialog box.
Choose Save.
The order number for the reservation number you have entered appears inthe Display Reservation: Overview dialog box.