Paypal Express Checkout : 10410 Invalid Token

Question

I Am using the Paypal Express Checkout API on my web site, and encountering an error while on the sandbox site. The USER, PWD and SIGNATURE fields have been verified and are cor

Answer 1

You must define some options in Profile in "Website Payment Preferences"

Answer 2

It seems that the account reset operation also disables the API credentials, but there was a delay of an hour or so during which the API credentials remained active, but strange things happened when using them.

After an hour, the API credentials were effectively disabled, so I just used the new ones and everything works fine.

In short: when performing an account reset in the sandbox, plan for an hour of downtime.