Outbound Queue
The user maintained in the RFC destination must have the debug authorization.
If no user data is maintained in the RFC destination then the user who wants to debug the unit must have this authorization.
The required authorizations are combined in the SAP_BC_WEBSERVICE_DEBUGGER role. This role is available in SAP_BASIS 7.10 SP2 and higher.
Inbound Queue
The user who wants to debug the unit must have debugging administration.
The required authorizations are combined in the SAP_BC_WEBSERVICE_DEBUGGER role. This role is available in SAP_BASIS 7.10 SP2 and higher.
Restrictions
If the status of a unit is 'green'( error-free and not locked) in the monitor, then you must use the debugging using external breakpoints.
For troubleshooting in a bgRFC, you can either use the bgRFC monitor or external debugging.
You can find a detailed description of the two debugging methods under: