Error in converting Planned Order to Production Order (Urgent)

Hi All,

I am facing an error when i am trying to convert a planned order to production order.

+Error message:

"Assignment order/WBS" is not allowed (WBS L.XXXXXX-XXXX)

Diagnosis:

The current status of object 'WBS L.XXXXXX-XXXX' prohibits business transaction 'Assignment order/WBS'.

Procedure:

To process business transaction 'Assignment order/WBS', you first have to change the status of object 'WBS L.XXXXXX-XXXX' to allow the transaction 'Assignment order/WBS'.+

I have another planned order identical to this one & for that i am not getting this error. So i checked the network for these 2 WBS elements, but could not find anything different in status.

I am unable to figure out what might be causing this error. Hope my problem is clear, await inputs.

Vivek