csi/enable is a SAP Parameter attribute which is used to control Enable content scan interface in ICM 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 .
If this parameter is set to "1", the filtering of the HTTP request
is activated. If the value is "0", no filtering is performed or the
filtering is deactivated.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.