Setting/Removing Deletion Flags for PRTs 
This procedure describes how you set or remove a deletion flag for a production resource/tool (PRT) with a PRT master record (miscellaneous).
For more information on how to set the deletion flag for the other PRT categories, see:
Prerequisites
You can only set a deletion flag for a PRT with a PRT master record (miscellaneous) if it is no longer assigned to an operation or phase.
Procedure
. Result
The deletion flag is changed, that is, depending on the initial state it is either set or removed. You cannot assign PRTs for which the deletion flag has been set.