MIM SSPR wrong error message

Hi,

We have deployed the default out of the box MIM 2016 SSPR solution.

When registering for SSPR, if a user types in a " " (i.e. space) for an answer, MIM does not respond with the expected error message of "your answer must be 4 characters or more".

Instead, MIM responds with the following wrong error message:

The password that you entered is incorrect.You must enter the correct password in order to register for Password Reset. (Error 3006)

Is this a MIM bug?

I know we can modify the 3000 message, but this clearly is the wrong error message being called by MIM. Also, I don't want to customise this error message, as it may give me the wrong message for another issue.

Any advise?

thank you,

sk