Requirement sets are named groups of API members. Office Add-ins use requirement sets specified in the manifest or use a runtime check to determine whether an Office application supports APIs that an add-in needs. For more information, see Office versions and requirement sets.
Office Add-ins run across multiple versions of Office. The following table lists the Identity API requirement sets, the supported Office client applications, and the minimum builds or versions for those applications where applicable.
Requirement set
Office on the web
Office on Windows
Microsoft 365 subscription
retail perpetual
Office on Windows
volume-licensed perpetual
Office on Mac
Office on iOS
Outlook on Android
IdentityAPI 1.3
Microsoft SharePoint Online and OneDrive*
Version 2008 (Build 13127.20000)
Office 2021: Version 2108 (Build 14326.20454)
Version 16.40 (20081000)
Not supported
Not supported
* Currently, the IdentityAPI 1.3 requirement set is supported in Office on the web only for documents that are opened from Microsoft SharePoint Online and OneDrive.
Important
In Outlook, the Identity API requirement set isn't supported if the add-in is loaded in an Outlook.com or Gmail mailbox.
Outlook and Identity API requirement sets
To require the Identity API set 1.3 in your Outlook add-in code, check if it's supported by calling isSetSupported('IdentityAPI', '1.3'). Declaring it in the Outlook add-in's manifest isn't supported. You can also determine if the API is supported by checking that it's not undefined. For further details, see Using APIs from later requirement sets.
Note
IdentityAPI 1.3 isn't supported in Outlook on Android or on iOS.
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