Here we would like to draw your attention to OOKU transaction code in SAP. As we know it is being used in the SAP PA-OS (Organizational Structure in PA) component which is coming under HR (HCM) PA module (Personnel Management). OOKU is a transaction code used for Correspondence User Groups in SAP.
It comes under the package for Organization and planning (application) (PP00). When we execute this transaction code, is the normal standard SAP program that is being executed in background. Transaction code OOKU is included in the SAP component for SAP_HR.
Transaction OOKU technical data table
| Tcode | OOKU |
| Usage | Correspondence User Groups |
| Module | PA |
| Sub Module | PA-OS-ST |
| SAP Package | PP00 |
| Program running | |
| Component | SAP_HR |