Not able to create production order for 1 of the material

Hi PP Gurus,

Need your help.

While creating production order I am getting error message, as shown below. Please advise me whether I am missing some thing?

Please note for the same material production orders already created. But now I am facing this issue.

{

No production supply area found for work center ID DUMMY4LA

Message no. LP 090

Diagnosis

No production supply area is assigned to the work centers (work center ID DUMMY4LA) used or the production supply area is not defined in the bill of material.

The production supply area is copied from the work center. If the production supply area is not defined in the work center it is copied from the reservation (using the bill of material).

Procedure

Make sure that the work centers used for the WM-PP interface are assigned to a production supply area otherswise the production supply area must be defined in the bill of material.

}

Thanks in advance,

Sharan.