Sorry for the late response.
Registered compounds are stored in a parent-version-lot hierarchy, where different versions can be different isotopic and/or different salt/solvate containing structures of the same compound. Structures having different stereochemistry are always stored as versions of NEW parents. Although the user:
1. might be facing a match list during manual registrations if stereo matches are already present in the DB.
2. can perform searches on the Search page of the application where compounds having different stereochemistry are all listed as search result.