Funding instrument in Sandbox mode

sandbox

#1

Wondering how to create a funding instrument in sandbox environment, as I’m not able to create a campaign without a payment source?

In general, is there a web interface for the Sandbox environment, from which we can add a test credit card?


#2

My bad. A funding instrument was created as part of the sandbox account creation, when I made the first call to GET /0/accounts


#3