SAP Message 6P492 - No requirements type exists for material &1 in plant &2

Diagnosis
No valid requirements type could be determined.
This cause of this could be:
No strategy group has been maintained in the material master record.

System Response
The system determines the valid requirements type from the strategygroup that was allocated in the material master record.

Procedure
Check the possible cause of the error and maintain the appropriatefunction.
Cause number 1 is maintained in the material master recod.
Proceed