SAP ABAP Message Class BL Message Number 500 (If you choose "All Objects", you can only choose "All Subobjects")
Hierarchy
SAP_BASIS (Software Component) SAP Basis Component
   BC-SRV-BAL (Application Component) Basis Application Log
     SZAL_COMMON (Package) Generally-Available Objects
Attribute
Message class BL  
Short Description Application Log    
Message Number 500  
Documentation status   3   The short text describes the object sufficiently
Authorization check Error Message      
Changed On 20140121   
Message Text
If you choose "All Objects", you can only choose "All Subobjects"
History
Last changed on/by 20140121  SAP 
SAP Release Created in