sec/ral_enabled_for_rfc is a SAP Parameter attribute which is used to control Read Access Logging for RFC 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 .
Caution: This parameter is intended for internal SAP use.
The parameter activates the recording of RFC communication for
particular RFC modules using the RAL framework (Read Access Logging).
The calling of all RFC modules entered in table SRAL_KERNEL_RFC is
logged (client-side and server-side).
0: RAL is deactivated
1: RAL is activated
2: RAL is activated in test mode. Test mode is only used for
verification programs. Test mode can be set in the profile. It is not p
ossible to dynamically switch to test mode using RZ11.
See SAP Parameter Documentation for full SAP documentation for this profile parameter.