Here we would like to draw your attention to OIAD transaction code in SAP. As we know it is being used in the SAP PM (Plant Maintenance) module. OIAD is a transaction code used for Field sel. equipment-specific fields in SAP.
It comes under the package INSC.
Transaction OIAD technical data table
| Tcode | OIAD |
| Purpose | Field sel. equipment-specific fields |
| Module | PM |
| SAP Package | INSC |
| Type | P |