"Relation key field contains duplicated values" message under child layer

[Tadeo98]

When attempting to synchronize by plugin, Project status with Warnings window shows up. Imagine having 1:N relation, parent and child layer, unique ID that connects them. Normally if I made two features with same "unique ID" within the parent layer, after hitting the sync icon, there is this "Relation key field contains duplicated values" message under parent layer in the warnings window. This is fine. But should there be the same message under child layer, which is expected to contain features with same unique ID from the parent layer?

[Wisarb]

Did you ever resolve this? I'm having an issue with Mergin breaking my relations if I have more than one child to a parent.

[CharlesGag]

+1, I get this warning as well but I don't think we should.