We have standard form integration to take PayPal payments. We also have a notification url setup for IPN. We get "web_accept" txn_type entries in these and use that to distinguish it from anything else like a dispute getting setup which we don't currently handle via the API. But we've got some recently where it's not "web_accept" but instead "cart" and we're trying to understand why. The docs say "cart" is: Payment received for multiple items; source is Express Checkout or the PayPal Shopping Cart. We don't use express checkout or the shopping cart anywhere. Can someone shed some light on this please?
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