Instant Update API should be available for Express Checkout in live / production mode.
In sandbox mode everything works well
- PayPal requests the URL, and then displays the flat rate shipping options -,
but in live / production mode PayPal doesn't request the URL at all,
the rest of checkout process works well.
I assured that all requirements are met for CallbackURL in live / production mode:
- The URL for CallbackURL begins with https.
- In sandbox mode, everything works well unchanged.
- The rest of checkout process works well in live / production and sandbox mode.
- SetExpressCheckout API call is responded with a response indicating success,
without warnings and a valid, working token. - The URL is valid and reachable (from all production PayPal IP addresses).
- HTTPS is supported by server.
- CallbackURL doesn't exceed the 1024 single-byte characters limit.
- CallbackURL contains only valid characters (ASCII only, for being sure).
- CallbackTimeout is set to maximum allowed value of 6 (seconds).
- The server responds during the 6 seconds timeout.
- CallbackVersion is set to 61.0 for full support of all available features.
(Should the version of calling API also used for Callback version, btw.?)
How can I find out the reason why PayPal in live / production doesn't request the URL?
Correlation ID of a an Express Checkout
which should use Instant Update API (but does not in live / production mode):
510ce7cd28011
Thank you for your answers in advance.
With best regards
