In the Extras / Options menu the setting Check
application for missing titles can be set for relationships on the tab Relationships. When opening an
relationship it will be checked whether all
defined portal languages are supported.
This is the case if for all elements, data fields, etc., titles have
been entered in all portal languages. If you have, for example, entered
an additional portal language in the country settings, titles will not
automatically be entered.
If desired, missing titles can be filled in with titles from one of the
other portal languages. To do so, select a portal language by clicking
in the column Amend with....