Planned Independent Requirement not getting set-off

Hi Gurus,

I had assigned a FERT material to one of the nw activity (proc.type : Reservation for WBS element) which I am producing in-house and I am assigning the HALB material to the second nwa under the same network and creating PIR. When i am executing MD51 for the FERT, system is creating a Planned Order for HALB as per the quantity mentioned in the BOM of FERT and it is not setting off the quantity mentioned against the PIR. I mean when I check MD04, it is not getting displayed.

what could be the reason for this?

I checked the forum and found this link had similar problem but could not find a solution.

planned-independent-requirement-not-getting-displa

Awaiting your valuable suggestions.

Thanks in advance.

Vinodh