while doing return PO with out doing GR my stock will be reduced based on return PO stock.
how to solve this
Return PO is created to return the materials already purchased from vendors.
For e.g. -
1. Suppose you have uploaded the initial stock of materials in SAP system at the time of Go-live and from that stock you have to return materials to vendor so you will create return PO and do the necessary activities.
2. Suppose you have purchased some material from vendor through route PO > GR > LIV > Payment. And now there is a requirement to return the material to vendor so for this you have to cancel the LIV Document first and also reverse the Payment Document otherwise system will not allow you to do Return Delivery to Vendor (Movement type 122) which is a tedious job so better follow Return PO process.