You want to know if IT Analytics version 2.1.3 is compatible with DLP 15.8.
Release : 15.8
Component : Default-Sym
The ITA version 2.1.3 is not compatibility with DLP 15.8.
ITA version 2.1.3 is no longer supported; it is 6 years old.
ITA will need to be updated to the latest version 2.9.1 with 15.7 content pack which is compatible with v15.8.