Checking the Source Release of the SAP System
Make sure that your SAP system has one of the source releases that have been released for this update and apply to all databases.
Context
For information about the supported source releases, see the document with additional product-specific information, which is referenced in the Master Guide (or Upgrade Master Guide, respectively) for your product.
Different SAP NetWeaver product instances can have different minimum SP levels. If you update an SAP NetWeaver-based system containing various product instances, make sure that your source release is on any acceptable support package level for all product instances implemented in the system.
Procedure
Determine the source release of the SAP system
Log on to the system and choose 
System 
Status
.
The release is displayed in the Component version field.