WSO2 ESB 4.9.0: what means error 101500
问题 In a connection to a server we get errors such as: <errorCode>101500</errorCode><errorMessage>Error in Sender</errorMessage> Is there a way to get more information on the cause, except from "Error in Sender"? Note: In the SSL transport sender I have set AllowAll for the HostnameVerifier <transportSender name="https" class="org.apache.synapse.transport.passthru.PassThroughHttpSSLSender"> <parameter name="non-blocking" locked="false">true</parameter> <parameter name="http.proxyHost" locked=