wdisp/permitted_uri_char_range is a SAP Parameter attribute which is used to control Allowed URI character range for URI permission 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 .
You can use this parameter to restrict the characters that the URL can
contain. Specify the parameter as a range of ASCII characters, such as
32-127.
The syntax is described below.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.