rdisp/TRACE is a SAP Parameter attribute which is used to control Set developer trace level information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
You can use this parameter to set the trace level for the dev_*
developer traces. The following values are possible:
0
No trace
1
Error messages are written to the trace file
2
Full trace. The trace entries are dependent on the SAP program traced.
3
Like 2, but data blocks are also traced.
Caution
Trace level 2 or higher affects the performance of the system and should
only be set for an error analysis. The trace files also grow very
quickly when trace logging is activated. Check that there is enough
space on the hard drive where the SAP directory is located. You can use
the parameter
See SAP Parameter Documentation for full SAP documentation for this profile parameter.