InfoPath Dev

I get the following error when I try to add a record to a Sharepoint List. 

The SOAP response indicates that an error occurred on the server:

Server was unable to process request. ---> Object reference not set to an instance of an object.

File:script.js
Line:120

Line 120 is XDocument.DataAdapters["Submit"].Submit();

Does anyone know why?  I am submitting to the UpdateListItem web service.

Code:

function btnAdd::OnClick(eventObj)
{
 var root = XDocument.DOM;

 // Retrieve the values for the calendar item
 var title = root.selectSingleNode("my:myFields/my:myFields1/my:Title").text;
 var location = root.selectSingleNode("my:myFields/my:myFields1/my:Location").text;
 var description = root.selectSingleNode("my:myFields/my:myFields1/my:Description").text;

 var batch = XDocument.DataObjects["EventCAML"].DOM;

 // Set the location
 batch.selectSingleNode("/Batch/Method/Field[@Name='Title']").text = title;

 // Set the location
 batch.selectSingleNode("/Batch/Method/Field[@Name='Location']").text = location;

 // Set the location
 batch.selectSingleNode("/Batch/Method/Field[@Name='Description']").text = description;

    // Submit the item details to the web service to update the calendar 
 XDocument.DataAdapters["Submit"].Submit();
 XDocument.UI.Alert( "Change Request has been successfully saved" );  
}

Hi Steve,

Is your data connection named "Submit"? That's probably the issue. It has to have the same name.

Yes it does.  It is named "Submit"

I made the following corrections but I still get the same error.  I deleted he Location column and re-added it so the right name is used.  I was testing with using Rules for the submit option is why there were two sets of Submits.   

The following error occurred:

InfoPath cannot submit the form.
An error occurred while the form was being submitted.
The SOAP response indicates that an error occurred on the server:

Server was unable to process request. ---> Object reference not set to an instance of an object.

File:script.js
Line:43

That error is occurring on the SharePoint server itself, and a likely cause is that you are not specifying a listName as a parameter to the WebMethod.  If you are specifying a listName, what is the value you are using?  It should be a GUID.

 See also:
Get a SharePoint list GUID from the browser
Add SharePoint list items with InfoPath