Customer Self-Service Portal

oauth not working for some specific api.

Hello,

I am trying to access data using oauth2  but some api is returning 

{"error_code":1121,"message":"OAuth Scope associated to the OAuth Access Token is disallowed."} 

where some other api such as (www.site24x7.com/api/monitors/XXX)returning data
with same api credentials oauth2.
I am using all scope also.

Site24x7.Account.Read,Site24x7.Account.Create,Site24x7.Account.Update,Site24x7.Account.Delete,Site24x7.Account.All,Site24x7.Admin.Read,Site24x7.Admin.Create,Site24x7.Admin.Update,Site24x7.Admin.Delete,Site24x7.Admin.All,Site24x7.Reports.Read,Site24x7.Reports.Create,Site24x7.Reports.Update,Site24x7.Reports.Delete,Site24x7.Reports.All,Site24x7.Operations.Read,Site24x7.Operations.Create,Site24x7.Operations.Update,Site24x7.Operations.Delete,Site24x7.Operations.All,Site24x7.Msp.Read,Site24x7.Msp.Create,Site24x7.Msp.Update,Site24x7.Msp.Delete,Site24x7.Msp.All,Site24x7.Bu.Read,Site24x7.Bu.Create,Site24x7.Bu.Update,Site24x7.Bu.Delete,Site24x7.Bu.All