rsec/ssfs_datapath is a SAP Parameter attribute which is used to control Directory for the data files of the Secure Storage in the File System 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 .
Path where the Secure Storage in the File System (ABAP) stores the data
files, without trailing separator character.
The Secure Storage in the File System (ABAP) can be maintained using
executable "rsecssfx".
See SAP Parameter Documentation for full SAP documentation for this profile parameter.