Hello,
I like to create new contacts in our phone system. There is an API for that: API-Documentation
When I use Pabbly, Zapier or simple Postman - I can create the contact without any problem. Here the configuration form Postman:

After sending that request, the contact is created successfully.
With the exact (?) same configuration in Power Automate:

I get the follwoing error:
{
"type": "error",
"reason": "The name cannot be empty",
"code": "The name cannot be empty",
"result": null
}
I have no idea what's going wrong. I tried a lot. Even with encodingUrl, attributes in body and so on.
Any ideas?
Thanks in advance,
Robert