Access not authorized - While Creating Account Record


         Multiple users with various phone models (iPhone and Android) are encountering an error message "Access not authorized" when attempting to save a newly created account record on the mobile app.

          The only way to prevent the error from happening upon it happening initially is to log out of the app and then log back in. 

        Could you please suggest something, how to find the actual reason for issue.

SugarCRM SDK Version for iOS - 8.0.502-1.4.2-2 and For Android - 11.0.512-1.4.2-2