User registration form UI language items missing for error messages

There is no Interface item for the pop-up error when a user does not fill in a required field:

  • Please complete the following fields to continue:
  • Please check that you have an internet connection, then press the button again to continue.

… so I can’t translate these into another language.

SAB 8.6.6

Does anyone know if there is a way for the Registration Screen errors to be translated?

I still don’t see any relevant entries under Interface in SAB 9.0.1.