I am trying to access Appian data from an external system. If I send a 'GET' request on the URL of the webapi with the appropriate endpoint, I run into Cross Origin Resource Sharing problems and the headers provided do not pass my pre-flight request. I wanted to know if there are any configuration changes in Appian's webAPI needed to do so that it responds to requests sent from the other system's URL ?
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To invoke Appian webAPI from external domain, you need to configure it in allowed origins in Appian.