EventGrid trigger raises Error

Original post is here.

I am making various LogicFlow using EventGrid. The EventGrid trigger may become an error the other day, and I am very troubled and I will keep that correspondence.

Although it is an error, it can be confirmed by following the output link from the history of the trigger.

Error like the above

Such error occurred in the trigger state. I did not understand at all what happened when an error occurred, but I got the situation by looking at various settings variously.

Trigger history of LogicApps, as shown above, and callback URL is generated when using EventGrid. The cause is unknown, but the URL here was inconsistent with the Webhook destination URL held on the EventGrid side.

When you use the EventGrid trigger in LogicApps, if you check the automatically generated EventGrid Subscription, Subscription will be created under the name LogicApp--- as above. It is the situation that the Webhook in this setting was different from the URL of LogicApps side.

Event reception from the EventGrid has been restored by matching the Full Endpoint URL from the setting to the callback URL provided on the LogicApps side.

Incidentally, there are actually two kinds of LogicApps' EventGrid trigger.

One is prepared in "Request" as described above. This is exactly the same as the HTTP Request trigger, but the EventGrid Subscription is not automatically generated.

The other is a trigger when EventGrid connector is selected. EventGrid Subsciprion is automatically generated only when using this. I happened to use it this time, but I do not know if that is related to the cause.