Transaction not yet indexed

21d6gDTCrDME9A7XGmGGrf8iPTYWHfHYoUzEicMs5gaJ4tsyYQMu51yB16TvmyDiqVoiTiWL8LMpnpCFtkMtbpKM

The transaction signature is valid but not yet indexed by this RPC node, or the transaction failed before inclusion.