We have several customers connecting to our APIs using 2 way TLS. Valid requests are working great and each request/response appears in Apigee traffic log. When a request is rejected, apigee responds with error messages as described here but there is no evidence of the request/response in Apigee.
We want to know when a client receives a certificate error. Ideally every failed request/response would appear in Apigee traffic logs. Based on the apigee docs we would expect to see an HTTP 400 log entry for each failed request.
Is it possible to see a log of these requests and/or setup alerts for certificate errors?