Previliges with API Flowable Rest and basic authentification

i have a problem, when i give the API REST prevliges to a specific group i can not authenticate with Basic authentification it gives me a 403 error response, but when i do whit API Flowable UI it works
thank you in advance

Not sure I understand.
What are you doing to give REST API privileges?
I assume you are overloading the SecurityConfiguration, can you show what you are doing?