If a collection has a 'useAsTitle' property configured, use this in the validation of relationship filter options

[ollieabbey]

Example screenshot:

The collection backing 'News Topics' has a 'useAsTitle' field (the value you can see in the screenshot), but when validated against the filter options, it shows the IDs rather than this field in the message.

As a user it would be easier to know which choices are invalid if the useAsTitle field was shown here instead.

Code around here.

I'm happy to try and make this change if you'd like as a first issue.

[akhrarovsaid]

I think this would be a nice UX improvement bringing more meaningful info for end users. One thing I would check for is that it uses a fallback to the original id when a user doesn't have access to the relatedTo/field. Similarly for deleted documents or when a collection doesn't have a useAsTitle.