Releasing/Locking Production Resources/ Tools 
Use
When you create or change a production resource/tool (PRT), you can determine whether it is freely available by using the status. You can thus temporarily lock a PRT, which is for instance defective. The status is taken into account when you
- assign PRTs to operations in routings or production orders.
- check PRT availability in production
Features
How and why you release an individual PRT, depend on the PRT category.
- For Materials, Equipment and Documents you determine whether they can be used as a PRT by setting a status.

If you check PRT availability in production orders,
- the system also performs a static inventory audit - it checks whether a sufficient quantity is available at the present time
- the system also checks the PRT usage counter for equipment.
- For production resources/tools with PRT master records (misc.) you use the status to determine specially,
- whether the PRT can be assigned in resource planning, that is in routings and production orders.
- whether the PRT is available for production and consequently whether availability checks are permissible in an order.
See also:
LO - Managing Material Master Data
PM - Structuring Technical Systems
CA - Document Management Guide