client-id

[LEDgem]

Hi

Here it says:
https://developer.paypal.com/docs/checkout/integrate/#1-get-paypal-rest-api-credentials

"Important: If you already added the PayPal script from the Try the buttons demo, swap client-id=SB_CLIENT_ID for your own client ID that you created in step one."

I've generated API username, password etc but nowhere does t say where to get the client-id. Where do I get this?