XLS Transformation Policy adding empty namespace

[giovanebds]

I created an API Proxy for a WS, using JSONtoXML and XSL to deal with it's transformation.

I created using the UI, using the policies generated.

I configured the JSONtoXML to:

<NullValue>NULL</NullValue>
<NamespaceBlockName>#namespaces</NamespaceBlockName>
<DefaultNamespaceNodeName>#default</DefaultNamespaceNodeName>
<NamespaceSeparator>:</NamespaceSeparator>
<TextNodeName>TEXT</TextNodeName>
<AttributeBlockName>#attrs</AttributeBlockName>
<InvalidCharsReplacement>_</InvalidCharsReplacement>
<ArrayItemElementName>Item</ArrayItemElementName>

In my request I need a custom namespace, I do so by:

{
  "request": {
    "#namespaces": {
      "xsi": "http://www.w3.org/2001/XMLSchema-instance"
    },
    "#attrs": {
      "xsi:type": "CustomType"
    }
  }
}

It adds the desired namespace, but it also adds an empty namespace:

<request xmlns="" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">

I don't need a default namespace in this situation and this empty xmlns is causing and erro in the WS to process the message.

Debugging the request in trace tab, I saw that the request was correct until passthrough the XSL Policy, so this policy is the one adding the empty xmlns attribute to my request xml.

Do I really need to remove it with manually or there is a configuration I'm not aware of?

[giovanebds]

I found the solution in the post above.

https://andrearegoli.wordpress.com/2015/12/31/remove-xslt-auto-generated-empty-namespace-xmlns/

Basically I had to force the parent namespace in the elements:

<xsl:element name="{local-name()}" namespace="parentNamespace">

So XSL removed the empty xmlns