In this blog post, let’s learn about the error message “1656 Duplicate user specifications are not allowed.” when working with HPE NonStop SQL/MX, the reason for the error and the solution to fix this error message.
Error Message
1656 Duplicate user specifications are not allowed.
Reason for the Error
You specified a valid username more than once on CREATE or ALTER of a privilege group. This includes the scenario where a user is mentioned using both Guardian username and external username.
Solution
Specify each desired user only once and retry the command
