About Question com.enthuware.ets.scbcd.v5.2.105 :

[ETS User]

"This is invalid because at least one side of a @OneToOne mapping must specify mappedBy attribute." is not a valid option because mappedBy attribute is actually specified in Account entity. It seems that this option comes from another, similar question, where the above option was valid.

[admin]

You are right. Even though the option is not marked as a correct option, it does not make sense for this question. It will be fixed asap.

thanks for your feedback!

[cjscript]

It's been 1 1/2 years since admin post and still not fixed. Will you update the simulator?

[admin]

Fixed!