After reading several entries regarding this subject, I tried diligently to fashion my xml structure for the form where the command would insert a row into a repeating table. The error I get is "Failed to insert the child node."
I'm using InfoPath 2010.
Here's the command and the screenshot of the data structure:
Insert /parent=/my:FoundationRequest/my:Approvals/my:ApproveReject /child=my:ApprovalDisposition /count=1
The xml structure: