Hi Angelo,
Few questions to understand your situation
1.Have you made check as 'Yes' for authorization object F_KNA1_GRP for t-code XD03 in t-code SU24?
2.Have you created a custom role 'A_FBD(CLI)' with authorization object F_KNA1_GRP with values only required for user to be visible?
3.Have you assigned the above role to the required users?
If answer to the above questions is yes then what is the error or issue you are getting if possible share the trace data or explain clearly the issue with screenshots.
Regards
Pradeep