PayPal Pro Integration: client authentication failed.

For some reason I keep receiving an error notice when I try to submit a test form before publishing. I when I get to "payments" I click on the paypal link that I included in my form and I get a message that says "Payment error: Client authentication failed" I don't to submit my form until I'm sure they payment feature is working properly. Please help! 

The payment field appears to be correctly integrated. Please contact PayPal's support to check if you PayPal Pro API credentials are correct.