Here we would like to draw your attention to OILZ transaction code in SAP. As we know it is being used in the SAP PM (Plant Maintenance) module. OILZ is a transaction code used for BOM Usage Free Material Asssignment in SAP.
It comes under the package INSC.
Transaction OILZ technical data table
| Tcode | OILZ |
| Purpose | BOM Usage Free Material Asssignment |
| Module | PM |
| SAP Package | INSC |
| Type | P |