Hello @Muhammad Hamza,
I think you are using RFA API to consume services from TREP, most likely Elektron, possible custom publishers/services as well?
The FIDs are published, made available, as part of the service, for example Elektron, and do not depend on which account is used to login and consume the service.
However, an account can be permissioned or not permissioned for service, and within service, may be permissioned for some instruments and not others.
I hope this explanation helps.