Checking Stock Material Availability 
Depending on your system settings and the data entered in the material master records, the system performs an availability check for all the materials that have been assigned to the operations in the maintenance order. It displays the results in an online message.
If there is not sufficient material available, you can display the error log containing detailed information on the results of the check using Goto
® Logs ® Material availability.
When you release a maintenance order, the system performs an availability check for the planned materials depending on your Customizing settings. If this check shows that certain planned materials are not available in sufficient quantity, then it depends on your system settings whether or not you can still release the maintenance order.
See also:
Material Planning Planning Stock Material Displaying and Deleting Material