Transaction not yet indexed

21F51EYpswPWS6d93dbeTzzmCugbRLBsFeJD92udQBJsDvQzess2mHDWxEDqsz1vKQh5bTHDoiUJJaP1QqYp5nZ4

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