@Vee
It's possible that the application you're trying to add as a tab is not supported in shared channels. Some apps may not be designed to work in shared channels, or may require additional configuration to work properly.
You can check the documentation for the application to see if it supports shared channels, and if there are any specific steps you need to follow to add it as a tab in a shared channel.
If the application does support shared channels and you're still having trouble adding it as a tab, you may need to contact the app's support team for further assistance.
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