I did a bunch of trouble shooting the other day (deactivating plugins, reactivating them, etc.) Sometimes they went through and other times they failed. This is the whole log from that day:
A completed order log looks like this:
2021-10-21T22:58:03+00:00 DEBUG POST https://api.paypal.com/v1/notifications/verify-webhook-signature
Request Body: {"transmission_id":"52e42390-32c2-11ec-b499-49fb4542398e","transmission_time":"2021-10-21T22:57:53Z","cert_url":"https:\/\/api.paypal.com\/v1\/notifications\/certs\/CERT-360caa42-fca2a594-2f1e8d33","auth_algo":"SHA256withRSA","transmission_sig":"HitYKVOmJbunQaulnY4ouS+b6k3EcWMEz0wxt7o3R38\/mOliJ\/uUZGVn7YKLerznb2BeTCGbS22JRLcES6YxUeqRGSH\/yGgtxeusV5Vu5fybLMF\/wIOMoSby8oX1SIw2YMPx\/RY9j\/HLlMsU4KaH5STdg8vl1ol3ks6xp5Zk6EoyoqZe1QA2PG7LWxPflDVdkNwG3me\/T+9MGDBFfGVxSWsVjkvvewy1et0knyBLXVnIx664t6e4s46b8p5aC3iTQ9IxL7kMRwXykkxEnkb\/+2tSR9mYQWdCtgxivT2OS1GGlMrhDYfuG2XN5Q035HLp6fwLM+OAeZkry3Tb6hzExw==","webhook_id":"4HK50809KM982891L","webhook_event":{"id":"WH-2JA91814B35018925-1UE54113MN389550M","event_version":"1.0","create_time":"2021-10-21T22:57:49.807Z","resource_type":"capture","resource_version":"2.0","event_type":"PAYMENT.CAPTURE.COMPLETED","summary":"Payment completed for $ 37.83 USD","resource":{"id":"80X814762R924871T","amount":{"currency_code":"USD","value":"37.83"},"final_capture":true,"seller_protection":{"status":"NOT_ELIGIBLE"},"disbursement_mode":"INSTANT","seller_receivable_breakdown":{"gross_amount":{"currency_code":"USD","value":"37.83"},"paypal_fee":{"currency_code":"USD","value":"1.47"},"net_amount":{"currency_code":"USD","value":"36.36"}},"invoice_id":"bbfdec-2540","custom_id":"bbfdec-2540","status":"COMPLETED","processor_response":{"avs_code":"A","cvv_code":"M","response_code":"0000"},"supplementary_data":{"related_ids":{"order_id":"39446097AS3707045"}},"create_time":"2021-10-21T22:57:28Z","update_time":"2021-10-21T22:57:28Z","links":[{"href":"https:\/\/api.paypal.com\/v2\/payments\/captures\/80X814762R924871T","rel":"self","method":"GET"},{"href":"https:\/\/api.paypal.com\/v2\/payments\/captures\/80X814762R924871T\/refund","rel":"refund","method":"POST"},{"href":"https:\/\/api.paypal.com\/v2\/checkout\/orders\/39446097AS3707045","rel":"up","method":"GET"}]},"links":[{"href":"https:\/\/api.paypal.com\/v1\/notifications\/webhooks-events\/WH-2JA91814B35018925-1UE54113MN389550M","rel":"self","method":"GET"},{"href":"https:\/\/api.paypal.com\/v1\/notifications\/webhooks-events\/WH-2JA91814B35018925-1UE54113MN389550M\/resend","rel":"resend","method":"POST"}]}}
Response Debug ID: 7fe3f3dbbe052
Response: Array
(
[code] => 200
[message] => OK
)
So it seems when the orders fail none of that info is sent to PayPal.