Are there any differences between the contents of a manifest file used for sideloading (local file share) and Office 365 admin center preview? I have a fully working add-in hosted on SharePoint, and am currently using file share "Trusted add-ins catalogue" approach (sideloading). I have asked our SharePoint rep to load the add-in into Office 365 admin center preview, but the "Apps for Office" tool responds that the manifest is not valid.
<?xml version="1.0" encoding="utf-8"?>
<OfficeApp xmlns="http://schemas.microsoft.com/office/appforoffice/1.1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:type="TaskPaneApp">
<Id>C058EB6E-F7CA-4586-832D-AD46F3BD3201</Id>
<Version>1.3</Version>
<ProviderName>Demo</ProviderName>
<DefaultLocale>EN-US</DefaultLocale>
<DisplayName DefaultValue="Rapid Component Add-in"/>
<Description DefaultValue="Demo Rapid Component Add-in service live"/>
<AppDomains>
<AppDomain>https://login.microsoftonline.com</AppDomain>
<AppDomain>https://eadadfs.acompany.com</AppDomain>
</AppDomains>
<IconUrl DefaultValue=
"https://acompanyportal.sharepoint.com/sites/ComponentAssembler/Shared%20Documents/RapidComponentLive/Images/logo.png"/>
<Hosts>
<Host Name="Document"/>
<Host Name="Workbook"/>
</Hosts>
<DefaultSettings>
<SourceLocation DefaultValue="https://acompanyportal.sharepoint.com/sites/ComponentAssembler/Shared%20Documents/RapidComponentLive/generated.aspx"/>
</DefaultSettings>
<Permissions>ReadWriteDocument</Permissions>
</OfficeApp>