Custom Connector - failed: { "statusCode": 404, "message": "Resource not found" }

[HenrikMB]

I am constantly getting a 404 error when I am using a webservice from Business Central to build

a Custom Connector with.

HMBHEADERTEST.Runitagainsam failed: { "statusCode": 404, "message": "Resource not found" }

When testing, it returns a valid 200 reply. Also in Postman it works.

I can see others also have problems with this error, but I have not been able to see from other posts in this forum, what 

the solution should be ?

Attached screenshot from fiddler.

[v-yutliu-msft]

Hi @HenrikMB ,

Do you mean that when you run an app using custom connector ,you will get 404 error?

This may be caused by many reasons.

Here are some similar issue that you could refer:

https://stackoverflow.com/questions/58521055/powerapps-custom-connector-returns-404-in-app-builder

https://powerusers.microsoft.com/t5/Connecting-To-Data/Custom-Connector-Post-Action-always-endsup-wi...

You could check whether their solutions work for you.

If the problem still exists, you could ask for help here:

https://powerapps.microsoft.com/en-us/support/pro/ticket/

Best regards,

[HenrikMB]

Hi v-yutliu-msft

The problem with the Powerapps custom connector that can not connect to Business Central is still there, but it is best described in the following thread.

https://powerusers.microsoft.com/t5/Building-Power-Apps/404-error-trying-to-consume-custom-connector...

There are mentioned a Service Request #: 120021322000110.

Is it possible to get an update from Microsoft about this problem, that for a long time, has been a known issue?