Hi @AriLukas,
I'm sorry to hear that you also have this problem. I am working with some electric and gas utilities in Field Maps. 🙂 The only way I can fix the problem is to:
1. Make sure the domain is the same as when I originally published the feature service.
2. Load the data locally and then Overwrite the Web Layer from ArcGIS Pro.
It is interesting to me that your issue does not always appear on the same layer. This makes me think that you might have a slightly different problem. My issue appears even when there is only one layer on the map. I have read about that some other issues that will cause the same error:
1. If you use the same domain on different layers and the domains do not match each other. I would make sure they all match.
2. If you have a view layer on top of your feature service and you changed the domain. I would try deleting the view layer and recreating it after changing a domain or just make sure that the view has the same domain options.
Good luck. Please let me know if you make any progress.
Mindy