I need some advice on building an app that references a map that belongs to a group that I am part of.
I am a contractor that belongs to my company's organization account. A client has invited me to a group and shared a webmap with me that contains an editable layer. I am able to view this map and make edits via the AGOL web interface.
When I create an app using the developer edition of Web App Builder and set the Portal URL to my organization's account (http://companyxyz.maps.arcgis.com/) I am able to add the shared map to the app and configure the Editor widget to reference the editable layer.
When I open the deployed app I log in through http://companyxyz.maps.arcgis.com/ and can then successfully edit the layer. However, my client is not able to log in to http://companyxyz.maps.arcgis.com/ even though he authored and shared the web map with me. If I change the portal URL to http://clientabc.maps.arcgis.com then I am not able to log in and view the map.
How can I create an app that we can both use to access our shared content? Is this possible?