In the past, if two Connect apps with the same macro alias were installed, both apps would fail to work in Confluence.
We have implemented preventative measures to only allow one app with unique macro alias to be installed at a time. Any following apps with a conflicting macro alias will not be able to be installed, thus avoiding this issue completely. Upon failed installation, user will be prompted with an error due to conflicting macro alias and will need to uninstall the existing app before installing new app.
Better user experience and usability of Connect apps.
If your app is known to have issues in the past with another app due to conflicting macro alias, please try installing the conflicting app in your instance that is enrolled in the developer first release cohort. Also check if you are able to update your app to a newer version and that these changes will not interfere with already installed apps from updating.
We plan to roll these changes out to production by March 31st, 2021.