problem

The database field LEK_languageresources.langResUuid is not set to unique.

Check TRANSLATE-3733, should be done together, since both issues have common parts.

solution

1. Investigate where the field is used internally
2. Check if references can be updated
3. Create a script which searches for duplications (will be a lot in the instances using GroupShare Plug-In)
4. The fix should update the uuid to a calculated one if duplicated
5. After that apply the unique index to the field