Hi Anil,
regarding the manually created PR's you can do one of following (given that there is no open PO created against it) :
- delete the position line, using the 'delete' button
- close the PR - flag the PR as closed so no PO can be created against it ('quantity' tab, 'closed checkbox')
- block the PR - 'status' tab, 'item' details, dropdown box
MRP generated PR's will be deleted by the system if the requirement is canceled; if the later remains open, then even though you delete manually, the system will again create a PR.
Routing deletion:
- one by one, using CA02, go to operations details, top menu bar, Edit>Delete
- mass, using CA98; you can use there the group number & counter in multiple selections
Regards,
H.