Transaction not yet indexed

21mkddEZWTgpayeUw6c33DR2aPRcNcSwUCm5puPXGnTpeGE8WqGxVknNNrWaZb53et4zCVL4rP4fxKFy8E4P9Tcw

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