Hi Rorie, Thanks for your information.
I can't deactivate the PO/PREQ, why because it is required to SNP.
The only think which I required is not to do the availability check in PO (ME21N).
I want to do the availability check only for sales order but system is not giving me good results.
If the product/location is active in IM then it is working for SO and PO.
Can you please give me other any options to stop availability check in ME21N.
I have defined the checking rule - below is the screen shot.
