Transaction not yet indexed

5k21sySvGzSCaRYQi1oonYaFfBSj8gLT8CqSkW7Fkg6UeiY251yCo2mMtoHAp21odaGiLUYwD8HpcE9ePEdbXbp7

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