How to link a webhook to an action (API request)?

[HTMHell]

I would like to determine if a webhook is linked to my API request, so I can avoid duplicated actions.

For example, if I made a partial refund via API, I immediately update that in my database.

Later, I will receive a webhook that notifies me about a refund. How can I know if that's an additional refund, or the one I created?

If I completely ignore webhooks, then if for example a refund is issued through PayPal, and not with my API request, then my system will not know about it.

And if I will only listen to changes with webhooks, everything will be delayed.

Is there any way to know?

I'm using Payments API v1 throguh PayPal-PHP-SDK

[MTS_Chiranjeevi]

Hi @HTMHell,

Thank you for contacting PayPal community.

Our sincere apologies for the inconvenience caused.

I request to please use "transaction_id" unique identifier to identify the webhooks.

For example, when you process a refund via API call please track the transaction ID in your internal database and once you receive PayPal webhooks event notification use the "transaction_id" to compare.

Detailed guide link for reference.

Thank you for understanding and patience.

Sincerely,
Chiranjeevi

PayPal, Inc.

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[HTMHell]

Thanks for the reply!

I don't have a transaction_id parameter in the webhook request being sent to me.

Do you mean resource.id?