Update WebComponentsIntegrationGuide.md

extension/docs/WebComponentsIntegrationGuide.md

@@ -526,8 +526,9 @@ For details, please follow [Get payment outcome](https://docs.adyen.com/online-p
 In case you encounter errors in your integration, refer to the following:
 
 ### API logs in CommerceTools backend
-<to be inserted>
 
+Log into the CommerceTools merchant center and navigate to the following section: **CT Merchant Center -> Orders -> Select Order -> Payments Tab -> View PSP transaction log**
+From here on you can collapse the different sections to see the API request and responses sent to Adyen and possible received webhooks for the specific order.
 
 ### Extension module errors