PR Deletion

Dear All,

I am creating a reservation and PR for material components.Some times my client issues the material from project stock and some times they convert the PR into PO.

So if i have to issue by 412 Q ,and trying to delete the PR it is not showing the deletion flag in the edit mode and under quantities/dates tab closed tab is also greyed.

so please advice me how to deal with this scanario.

Muzamil