We're currently trying to publish an add-in on the office store, but it uses functionality from the 1.9 version of the ExcelApi requirement set. This requirement set is not supported on Excel for OSX 2016 (which is fine, none of our clients are on OSX of any kind). However, when I update my manifest to reflect this requirement, manifest validation (as well as the manifest upload section of the MS partner center) still shows Excel for OSX 2016 as a supported platform, and we've been rejected because our add-in fails testing on that platform. This is what the Requirements section of the add-in's manifest looks like:
<Requirements>
<Sets DefaultMinVersion="1.1">
<Set Name="CustomFunctionsRuntime" MinVersion="1.1"/>
<Set Name="ExcelApi" MinVersion="1.9"/>
</Sets>
</Requirements>
According to this page, Office for OSX 2016 doesn't support ExcelApi above 1.1, and doesn't seem to support the CustomFunctionsRuntime at all, so I'm not sure why it's still considered a valid target: https://learn.microsoft.com/en-us/office/dev/add-ins/overview/office-add-in-availability
Any insight would be appreciated. Thanks.