SAP Cloud Platform Open Connectors - Twitter Connection

Dear all,

I try to send a status post with iFlow via SAP CP Open Connectors to Twitter. However, it does not work and I do not know why. I hope someone of you can help me.

Scenario:
Postman --> SAP CP Integration (iFlow) --> SAP CP Open Connectors --> Twitter

I configured the iFlow with the Open Connectors-Adapter (see attachment). In Postman I get the error code 404 "Not found - The requested resource is not found". I tried several configuration (and get error codes 400 or 405) but I did not get the correct one. So what is wrong?

Thanks and best regards
Oliver Dickinson