Adding a product to a quote with Salesforce WSDL

[jn]

I am trying to create a Quote and then add a product to it based off of the Zuora for Salesforce object model diagram. I am using the Salesforce Enterprise WSDL for my org.

So far I am doing the following:

• Creating a Salesforce account
• Adding a Salesforce contact to the account
• Adding an opportunity linked to the account and contact
• Creating a Zqu__Quote__c with a subscription type of 'New Subscripton
• Creating a Zqu__QuoteAmendment__c linked to the quote
• Creating a Zqu__QuoteRatePlan__c linked to the amendment - this has a product rate plan and product rate plan zuora id fields set

When I go to view the quote in Salesforce the following exception appears:

"Cannot build metric objects for the following amendment type: NewProduct"

Please advise how I should be doing this, which other SObjects should I be creating as I assume I am missing something here?

[Jyoti_Sinha]

@jn could you please PM me the SF ORG and URL to the quote where the error message is being displayed. I can capture the debug log and provide you further details on same.