executing default fault sequence error code 303001 wso2 esb - wso2

Question

i have a proxy service that call a web service . sometimes it send out error code 303001 and after refresh it work again . my mind of refresh is i open admin panel in list of service choose design view of my service and click next next finish. after that service work correctly and after 1 hour it throw out error code
my service :
<?xml version="1.0" encoding="UTF-8"?>
<proxy xmlns="http://ws.apache.org/ns/synapse"
name="BillVerification"
transports="https,http"
statistics="disable"
trace="disable"
startOnLoad="true">
<target>
<inSequence>
<class name="org.sample.mediators.citydi.HashMediatorCityDI"/>
<log level="full" category="FATAL">
<property name="fprever" value="justyou"/>
</log>
<property name="DISABLE_CHUNKING"
value="true"
scope="axis2"
type="STRING"/>
<send>
<endpoint>
<address uri="http://checkbill2.citydi.net/CheckBill.asmx?wsdl" format="soap12">
<suspendOnFailure>
<initialDuration>100000000</initialDuration>
<progressionFactor>1.0</progressionFactor>
<maximumDuration>100000000</maximumDuration>
</suspendOnFailure>
</address>
</endpoint>
</send>
<log level="full" category="FATAL">
<property name="send1" value="send1"/>
</log>
</inSequence>
<outSequence>
<log level="full">
<property name="beforeSENDout" value="2"/>
</log>
<send/>
<log level="full" category="FATAL">
<property name="send2" value="send2"/>
</log>
</outSequence>
</target>
<publishWSDL uri="http://checkbill2.citydi.net/CheckBill.asmx?wsdl"/>
<description/>
</proxy>

Answer 1

303001 = Address Endpoint is not ready to connect
Perhaps because of a corporate proxy / firewall ?
You'r wrong thinking your endpoint is active always : use a named endpoint instead of your anonymous one and have a look to wso2 web console : I guess it will be deactivated (the "action" become "Switch on")
In your case, with an anonymous endpoint, when you edit / save your proxy, the endpoint is switched on.
If you don't want your endpoint to be suspended add something like this :
<suspendOnFailure>
<errorCodes>-1</errorCodes>
<initialDuration>0</initialDuration>
<progressionFactor>1.0</progressionFactor>
<maximumDuration>0</maximumDuration>
</suspendOnFailure>
If you don't want your endpoint to manage a specific timeout, add something like this :
<markForSuspension>
<errorCodes>-1</errorCodes>
<retriesBeforeSuspension>0</retriesBeforeSuspension>
<retryDelay>0</retryDelay>
</markForSuspension>