Hi Eduard. Thank you for your response.

I've tried do a call to something like this (without filterSpec)

/Info/FilterMembers/Cube

and got this error

{"Info":{"Error":{"ErrorCode":"5002","ErrorMessage":"ERRO #5002: Erro Caché: <UNDEFINED>zWriteFilterMembers+47^%DeepSee.REST.v1.InfoServer.1 *tMembers(1)"}}}

If I append a filterSpec so I get a correct response.