Transaction not yet indexed

5n21cLKvvFHvvGs2Ckv9zkNNMSemmUV7vsVhKF8Ga1uJsVWJApwFEFMMmNGfrXriqXj9xFbm9AgT2e1nxbnuC9NA

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