abap/memory_inspector_file is a SAP Parameter attribute which is used to control prefix for filename 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 .
The system parameter ABAP/MEMORY_INSPECTOR_FILE is a prefix for the file
name that is used when writing, or when searching for and reading, a
See SAP Parameter Documentation for full SAP documentation for this profile parameter.