Here we would like to draw your attention to OS71 transaction code in SAP. As we know it is being used in the SAP CA-GTF (General Application Functions in CA) component which is coming under CA module (Cross Application).OS71 is a transaction code used for ECH: Change Number Format in SAP.
It comes under the package CC0C.
Transaction OS71 technical data table
| Tcode | OS71 |
| Purpose | ECH: Change Number Format |
| Module | CA |
| Component | CA-GTF |
| SAP Package | CC0C |
| Type | P |