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Support Article

IAC error: "Invalid method: POST " from Gateway



When running an IAC harness, after a certain step in the process and clicking submit, the result is a "PRGateway Exception: Invalid method: POST for..."

Error Messages

PRGateway Exception: Invalid method: POST for http://<host>:<port>/prweb/IAC/WlaBlwHX5QLebx0R0Ai-22o981PLTMTQ*/!PriorAuth/$STANDARD?pyactivitypzZZZ=1491338eb9d2b26aa2bdba9216cdcabf9fbfee856d5c3ab84b7f970dc4f336d537442bd8d81a2c7274bcf33611fcdf351131709a0eb6396d67c24513af0a56e3a210700a0d939dbe3c221e0493e1d4a26d74ac388f077eb5fafaaf372e753306d2f059b2245feb7a2d5a60961cd38de2564e47a542b1307f4149ebfbe7600d53

Steps to Reproduce

Deploy prgateway on Websphere Application Server 8.5.5+ and access the prgateway through the IBM HTTP web server.

Root Cause

The root cause of this problem is due to the fact that the IBM HTTP Server Websphere Application Plugin does not
use the HTTP 1.1 100 Continue support by default.


This issue is resolved through the following local change: use the JDK 1.6 on Websphere 8.5.5+ where the expect:100-continue header is ignored.

Published January 31, 2016 - Updated December 2, 2021

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