Function trigger-function failed with error-code: 541 Unknown

[Radoslaw_Szulgo]

What is HTTP Error code 541 mean when trying to call an app function? The app function calls an external service. How to troubleshoot this? 

[dirk_wall · Accepted solution]

Hey Radek,

Could you please check if the external endpoint you try to connect to is in the Dynatrace JavaScript Runtime allow-list?

Allow outbound connections | Dynatrace Developer

Nevertheless, I agree that we need to improve the error message here but this is already on the way AFAIK.

Cheers,
Dirk

[Radoslaw_Szulgo]

OK. Good hint! Indeed we're using a custom endpoint via the AWS API gateway. For the sake we've disabled the limitation to outbound connections to endpoints in the allow-list like that:

This helped. We'll turn it on and add our endpoint to the list. Thanks Dirk!