With admin access login into EM Console. Select soa_infra, right click mouse -> Security -> Application Roles. On right side, click green arrow and see list of Roles shown. Select the role named SOAMonitors, click on this. And add a Monitor_User_1 to this.
but we are still getting same error.
Kindly let us know if we are missing something while creating monitor user and how to get rid of these messages.
Please note that we are already in Production and our log files are filled with these messages.