Adwords API Create CRM Userlist WhiteListing Issue

[dpa...@strongview.com]

I'm running the Google Adwords code samples against a test account I've created in Adwords. Most of the functionality works as expected.

When I run the particular example : 201708.AddCrmBasedUserList I'm receiving the following error when trying to add users to a newly created CRM User List:

[NotWhitelistedError.CUSTOMER_NOT_WHITELISTED_FOR_API @ operations[0].operand.membersList[0].addressInfo, NotWhitelistedError.CUSTOMER_NOT_WHITELISTED_FOR_API @ operations[0].operand.membersList[0].addressInfo, NotWhitelistedError.CUSTOMER_NOT_WHITELISTED_FOR_API @ operations[0].operand.membersList[0].addressInfo]

I'm not seeing anything in the documentation that indicates that a test account shouldn't be able to do this. What is the underlying cause and how can I test this functionality as I'll be using it within an application?

Thanks,

Daven