XML Schemas page warning - Load the schemas one by one to include the required schemas.

Hi,

I need to generate XML Port for a web service that consists of multiple XSD files. When I load any XSD that has reference to some other XSD I get the following warning.

Some required schemas are missing. Load the schemas one by one to include the required schemas.

I have tried to load the missing schemas separately but this didn't help. Tested in NAV 2016 and 2017 but got the same warning.

Any suggestions please?

Thanks
Kamil