XML Adapter: How to have xmlns present in the output of a &


I am generating an xmlString based on a schema given. The output xmlString from the ‘GenerateXML’ operation looks good. However, the xml namespace like this xmlns=“mesapi/schemas/version1.0/shipload”
supposed to be present, is missing from the xmlString.
In the GenerateXML configured operations, under the ‘NameSpace Mapping’ tab, I have a name space like this: “mesapi/schemas/version1.0/shipload” with no prefixes. I don’t want any prefixes for this name space.

Is there anyway to make the default name space present in the output xmlString? Many thanks.