Team Foundation Server Periodic Identity Synchronization error

Hi,

Any idea about this error?

Identity sync completed. 1 errors occurred while syncing identities. Details:[Error] TF200035: One or more errors occurred when Team Foundation Server attempted to synchronize the following identity: XXXXXXXXXX. Number of errors that occurred: 1. ++++++++++++++++++++++ Sync error for identity: XXXXXXXXXX Specified method is not supported. at Microsoft.VisualStudio.Services.Identity.IdentitySynchronizer.ReadIdentityFromSource(IVssRequestContext requestContext, Identity identity, Boolean includeMemberships) at Microsoft.VisualStudio.Services.Identity.IdentitySynchronizer.SyncOneGroupMembership(IVssRequestContext requestContext, Identity groupToSync)

Thanks in advance.

Regards,

Sourabh J.