We want to be able to launch the X appian instance from the Y so that the details can be passed by the system.
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Is the question that you want to launch a start form on another Appian instance?
The only way to do this would be an API request that would return you a URL to a Task Form. It would be 2 steps though (1 for the button and then you would have to click on the URL).
Mathieu Drouin said:another Appian instance
For some reason I assumed OP was referring to process instances, but good point. More detail definitely required here.
Yes I tried this approach to embed the task in target interface am using webcontent field it says "abc.appiancloud.com refused to connect" in documentation it says "Internal Appian interfaces and Appian URLs are not supported."
Don't embed the url, they actually need to click on the link and redirect to the other application.