WDA applications doesn't work using web dispatcher

Hello,

We have configured WDA applications for open enrollment. The applications work fine when not using the web dispatcher.

But when using the web dispatcher, when I click on a WDA application it doesn't do anything.

When viewing the http watch trace it seems to be stopping on the following POST: http://url.of.the.webdispatcher:1082/sap/bc/webdynpro/HRESS_A_MENU...

I think that for some reason the web dispatcher can not reach my ERP backend system.

Here is my profile set up:

# SAP Web Dispatcher Ports

icm/server_port_0 = PROT=HTTPS,PORT=443, TIMEOUT=900

icm/server_port_1 = PROT=HTTP, PORT=1080

icm/server_port_2 = PROT=HTTP, PORT=1082

# Accessbility of systems and ports

wdisp/system_0 = SID=PRD,MSHOST=my.erp.host,MSPORT=8100,SRCSRV=*:1082

wdisp/system_1 = SID=EPP,MSHOST=my.ep.host,MSPORT=8101,SRCSRV=*.1080

The WDA application functions properly when not using the web dispatcher.

Can you please give me any suggestion?

Thank you,

Ron Fink