Using the same xsd for a xml-to-domain and domain-to-xml is possible, as long as mendix can handle your xsd. We're using the same xsd for several mappings, so it should work. When you update an xsd in your model, please be sure that you open the mappings which are using this xsd and save them.
OK, but when I create a domain to XML mapping based on the same schema. The error appears (and stays) "35 The XML schema has been changed. Please reselect the XSD elements" The XSD is a UBL 2.0 XSD for an Invoice, maybe this cannot be handled by Mendix? I imported the XSD without any problem...
We are experiencing exactly the same error, also using the UBL 2.0 XSD. We use Modeler version 5.4.1.
How can we solve this issue?