Error while running "Sales Order" page in browser.

Neha_Marwaha

Hello

I am transforming the sales order in page. It successfully transformed but,
I am getting the following error while running url:
http://localhost:7047/DynamicsNAV/WS/CR ... ales_Order

- <s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"&gt;
- <s:Body>
- <s:Fault>
<faultcode xmlns:a="urn:microsoft-dynamics-schemas/error">a:System.ArgumentNullException</faultcode>
<faultstring xml:lang="en-US">Value cannot be null. Parameter name: key</faultstring>
- <detail>
<string xmlns="http://schemas.microsoft.com/2003/10/Serialization/">Value cannot be null. Parameter name: key</string>
</detail>
</s:Fault>
</s:Body>
</s:Envelope>

Sales Order Subform is running successfully by running url:
http://localhost:7047/DynamicsNAV/WS/CR ... Order_Line

Kindly help me in resolving the error.

Regards
Neha Marwaha