This should be the object id or sid of the service principal from the source AAD provider. Example: d47d025a-ce2f-4a79-8618-e8862ade30dd Azure Devops will communicate with the source provider to fill all other fields on creation.
OptionalstorageStorage key should not be specified in case of updating service principal
Use this type to update an existing service principal using the OriginID as a reference to an existing service principal from an external AAD backed provider. This is the subset of GraphServicePrincipal fields required for creation of a GraphServicePrincipal for AAD use case when looking up the service principal by its unique ID in the backing provider.