Creating a Production Resource/Tool as a Material 
If the production resource/tool (PRT) is not to be used immediately but from a particular date in the future, choose Material ® Create ® Schedule
You must enter a material type for which you can maintain the "Prod. resources/tools" view. An example of such a material type is FHMI in the standard system.
The Select View(s) dialog box appears.
The Organizational Levels dialog box appears
If you have entered a material to copy from in the initial screen, additionally enter the organizational levels from which data is to be transferred.
The first view appears.
You use the MM/PP status to release the material for use as a PRT.
You cannot change the base unit of measure or the unit of issue after you have assigned the material as a PRT to operations.
See also:
LO - Managing Material Master Data
, in particular Creating Material Master Records and Maintaining Material Master Records