XML Validation Error Issue

[mcnd96]

When using the validate tool, there is an invalid error when using the OnLoad attribute to invalidate the tool bar and get a reference object to a new instance.

Example:
<mso:customUI xmlns:mso="http://schemas.microsoft.com/office/2009/07/customui" onLoad="RibbonLoaded">

This is the incorrect error message from the Validate tool:
Ln 1, Col 1: Unknown namespace "". Custom UI XML namespace must be "http://schemas.microsoft.com/office/2009/07/customui"

You could also add the ability to create the correct call back for this in the Generate Callbacks tool.

Microsoft documents it here:
https://learn.microsoft.com/en-us/office/vba/api/office.iribbonui