pm/sm order - purchase requestion - delivery address header-displaymode

Dear MM experts,

In service order - operations - automatic pr is created after release of service order (control key).

The same pr is opened thru ME52n, facing problem that the entire PR is in display mode,

but surprised to see the entire requisition is not change from display to change mode in ME52n.

Actually, user wud like to pull the delivery address at header level thru drop down list in address field/vendor

or

is there any method to pull the delivery address in service order by clicking on pr no.?

kindly help how the Service Order PR be available change mode in ME52n.

regards

Srihari