Transaction not yet indexed

621JSNGL3QpCgxui1SFZZq4c3hNEY7Avb7tkkdNH1iXYFUH1rJBeUGPS2P3LsqiFJUTgW4WsKEMLMRwFoQFE5Kt2

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