rdisp/TRACE_SEARCH_LIST is a SAP Parameter attribute which is used to control List of trace file types for automatic search 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 .
Using this parameter, you can specify a list of trace files that should
be included in the automatic trace search (see also the parameters
See SAP Parameter Documentation for full SAP documentation for this profile parameter.