Publishing Orchestrations/Schemas as Web Services: "[System.Xml.Schema.XmlSchemaException] The content type of the base type must not be a simple..."

If we publish an Orchestration/Schema as Web Service and receive:

Unable to load assembly. ''[System.Xml.Schema.XmlSchemaException] The content type of the base type must not be a simple type definition.


If we are publishing schemas, we will have to validate the schema.

If we are publishing orchestrations, we will have to validate the schemas of the messages that we receive or send by the orchestration ports and validate that the xsd are correct.

We can check our XSDs at W3C.