Here we would like to draw your attention to OPA1 transaction code in SAP. As we know it is being used in the SAP PP-CRP (Capacity Requirements Planning – PP) component which is coming under PP module (Production Planning).OPA1 is a transaction code used for Maintain combination definitions in SAP.
It comes under the package CY0C.
SAP OPA1 menu path
See the possible menu paths to access the same report by avoiding entering the transaction code.
Path 1
Logistics → Project System → Information System → Tools → Resources → Select → Combination Definition
Path 2
Accounting → Project System → Information System → Tools → Resources → Select → Combination Definition
Path 3
Information Systems → Project System → Tools → Resources → Select → Combination Definition
Path 4
Information Systems → General Report Selection → Project System → Tools → Resources → Select → Combination Definition
Transaction OPA1 technical data table
| Tcode | OPA1 |
| Purpose | Maintain combination definitions |
| Module | PP |
| Component | PP-CRP |
| SAP Package | CY0C |
| Type | P |