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3075143 - "404 Not Found" error message when involving SAP Web dispatcher or other proxy

Symptom

"404 Not Found" error message only happens when calling Web dispatcher URL, like http://<Web dispatcher hostname>/<service name>

If you call backend system directly, no issue, like http://<backend system hostname>/<service name>

In high level trace, we can see Web dispatcher has already forwarded the request to the right backend system, also ICM has dispatched the request to work process level successfully, we can see the work process set 404 for this request, like:

dev_w*(level 2):
...
M   ICTSYS: SetStatus 404 Not foundICTSYS
...


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Keywords

404 Not Found, web dispatcher, SICF, service, is/HTTP/virt_host_1 , KBA , BC-CST-IC , Internet Communication Manager , BC-CST-WDP , Web Dispatcher , Problem

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