Code: 9125 - Expected input credential was not present

[Bi]

Hello,
I am currently testing the sandbox connection through postman for the "dCVV2" api. I followed the steps in the "Two-way SSL Guide" and the "Hello word" project works correctly.

I use the same collection that is downloaded from the "Api reference" section.

I added my personal key and my project certificate for postman but I don't know if I should add anything else.

[Bi]

Update.

Reading the documentation I could see that I was missing creating "keyId". Generate Key-ID, add CRS and download the key.

In the header of the request I added "keyId: <key id>. Now it shows me a different code.

In postman:
CRT file: certificate.pm(Two-Way SSL)
KEY file: (key created with the project)

{

    "responseStatus": {

        "status": 401,

        "code": "9207",

        "severity": "ERROR",

        "message": "Token validation failed",

        "info": ""

    }

}