Netconf-console error using augmentation

I am adding an augmentation to a module and I get the following error when trying to edit-config/create using the netconf-console.

My augmentation compiles correctly and I can pull the schema via netconf-console --get-schema`

Why does it fail when I try to create an entry?

XML for edit-config/create


<?xml version="1.0" encoding="UTF-8"?>
<rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="1">
<error-message xml:lang="en">'my-prefix' is an unknown prefix.</error-message>
unexpected EOF in NETCONF transport

Just in case anyone else runs into this…

Needed to add the xmlns to resolve prefix