Transaction not yet indexed

Cu5AkfDdrEeuRntSN8cXrGSuiLpu5M8f81eLcECvYiMkpKGmQMZAAwQtTbZoFRa9tyWA7dN8ekyLfdbouL16xf9

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