Http request POST unauthorized

Hi, i have two NR instances, one hosts a HTTP IN node which awaits POST messages on a specific url (/device/xxx) and another instance where i want to send json with the http request node.

The HTTP IN node is working i tested it with rested, a MAC program to send requests to REST server.

Using the same configuration within the second NR instance with HTTP Request node causes an unauthorized response.
I use tls and basic authentication an only send a json als msg.payload.

I tried several variants but still it does not work.

Both instances are cloud hosted and not behind a specific firewall.

Any ideas about the root cause of my problem? It looks like i have the same problem like posted here but there was no solution posted.

Hi, could you share the raw response you get with rested including headers ?