A different version of this App is already installed with the same version number

Occasional Contributor

I get this error message when I try to update an existing SharePoint Hosted Add In on SPO.

The current running version is and the version of the update is

I double checked the feature version number and the app manifest version number. They are both

So, the error message is not true.

The upgrade actions contains some minor changes to script files, a page and a new site column: 

	<ElementManifest Location="SiteColumns\Elements." />
	<ElementManifest Location="Scripts\Elements." />
	<ElementManifest Location="Pages\Elements." />  

What could cause such issue? - The version number in my AppManifest.xml and the feature definition is


I cannot remove the Add-In and redeploy it, it contains a lot of data already.

Any hints?



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