TI-API: /store/subscriptions/inventory/test 库存订阅证书错误

Part Number: TI-API


我的callbackurl设置的是 kacloud-508097600130383872-arc.z.kasoftwarecloud.com:28888/.../webhook.rsb,
在API测试网站上一直报错:
{
  "status": "failed",
  "responseCode": 0,
  "message": "I/O error on POST request for \"https://kacloud-508097600130383872-arc.z.kasoftwarecloud.com:28888/connector/TIApi/TIApi_Webhook_Inventory_Subscribe/webhook.rsb\": PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target; nested exception is javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target"
}
请帮忙看看是什么问题?我们的证书不符合要求吗?