javax.net.ssl.SSLHandshakeException: Received fatal alert: unsupported_certificate in the HTTP Client 关注

Good morning,

I am trying to connect and test one of the endpoints I am reading data from. For that purpose I need to send them my client certificate. Unfortunately I am getting each time the

javax.net.ssl.SSLHandshakeException: Received fatal alert: unsupported_certificate

and this looks like my request doesn't even "leave" Intellij. In the .idea/httpRequests I can see only entry in the http-requests-log.http.

I have following configuration:

  "SSLConfiguration": {
      "clientCertificate": {
        "path": "C:\\path\\client-certs\\name.cert.pem",
        "format": "PEM"
      },
      "clientCertificateKey": {
        "path": "C:\\path\\client-certs\\name.key.pem",
        "format": "PEM"
      },
      "hasCertificatePassphrase": true,
      "verifyHostCertificate": false
    },
    "CL-CERT-KEY-PASS": "{here I have a correct password}"

I am using IntelliJ IDEA 2021.1.2.

Can you please give some hint what might be wrong ?