What are the correct visa sandbox values for the payments API?
I’m getting a 400 “invalid card data”
I’ve been using:
4111 1111 1111 1111 12/22 123 94103
I took a look at the logs and it looks like the source_id you’re passing to the payment request was created by a different application than the one you’re charging with. The error in your API Logs is Card nonce not found in this application environment. Please ensure an application ID belonging to the same environment is used for the SqPaymentForm.
Also is there a reason your using the SqPaymentForm? It’s currently deprecated and scheduled for retirement. 
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