wdisp/max_url_map_path_len is a SAP Parameter attribute which is used to control Max length of path name in the URL map table 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 .
This parameter determines the maximum path length in the SAP Web
Dispatcher�s URL mapping table.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.