Here we would like to draw your attention to OSS1 transaction code in SAP. As we know it is being used in the SAP BC-CCM (Use Subcomponents in Basis) component which is coming under BC module (BASIS).OSS1 is a transaction code used for Logon to SAP Service Marketplace in SAP.
It comes under the package STUN.When we execute this transaction code, RSEFA910 is the normal standard SAP program that is being executed in background.
Transaction OSS1 technical data table
| Tcode | OSS1 |
| Purpose | Logon to SAP Service Marketplace |
| Module | BC |
| Component | BC-CCM |
| SAP Package | STUN |
| Program running | RSEFA910 |
| Screen No | 1000 |
| Type | R |