Serial Number Tracking while Goods receipt

Dear all,

I am sending the material with serial no. to the vendor and making a Subcontracting P.O for that.While Goods receipt against P.O , for the parent material If i give any serial number which is already existed in our system irrespective of any plants with in a company code, it is taking provided if i tick the dialog box of "Existence of serial no. reqd" in SPRO.if we didnt tick the box, system will create the new serial no.

How to go about this?

But logically, for sending the material we are using 541 movement type where we are mentioning the serial no.

For receiving the same , we are using 101 (W. r to P.O), where we nowhere mentioning the serial no at all.

Actually at which moment we are telling the system that we are sending this particular serial no. to the vendor.

Any option is there in Sub-Contracting P.O where we can enter the serial no?

Plz reply.

Regards,

Sureshbabu.N