MRP at company code level

Question

Dear Experts,
We required MRP at Company code level.
We have 33 plants for MRP run , While running MRP system has to consider Finish Goods stocks of all plant's location should be consider for Availiblity check
MRP run carried with scope of planning , in this scope of planning all the
required plants are assigned , during planning Run , the stocks at other
plants are not consider during NET requirement calculation.
In turn it creates the planned independent requirement directly.
So kindly suggest where we are going wroung. 
Thanks 
Material with scope of planning for all required plants.
1. material with MRP type --- PD
2.procurement type --- F and X (since planning external )
3.Planning strategy --10

Answer 1

Don,
We required MRP at Company code level
SAP PP does not explicitly support this requirement.  Since each plant is owned by a single company, you can run MRP against all plants owned by a specific company.  This will at least select the right materials for processing.
While running MRP system has to consider Finish Goods stocks of all plant's location should be consider for Availability check
MRP is not related to availability check.  FYI, if you are actually talking about availability check, and not MRP, there is no availability check available in ECC that will check inventory across plants.
the stocks at other plants are not consider during NET requirement calculation.
Yes.  This is normal.
In turn it creates the planned independent requirement directly.
MRP does not create Planned independent requirements.
In short, you are doing nothing wrong.  This is the way that it works.  If this is unacceptable, then you will need to create a customized solution with Enhancements or BADIs.
Best Regards,
DB49