Transaction not yet indexed

Cx21ne4QTFpxMPLab9UckLKE21yEazwnRYv46x6rCZNTCZ5oQgaAst6cWBCayBfbbveD8Pi2uGGKQrfBNAT7WC9

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