rdisp/accept_remote_trace_level is a SAP Parameter attribute which is used to control accept external switch of 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 .
So that distributed processes can be monitored, if the user trace
(transaction SM04) is activated, the trace level is inherited for
internal and external calls (such as RFC, HTTP, update, and so on).
These adopt the trace level and generate a trace for the processing of
the relevant processing step. To prevent misuse, you can use this
parameter to prevent the trace level from being transferred.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.