Transaction not yet indexed

mn21wu2Uvm1mD5L77TWVNkT2Ak1LS1A6BRLkUzpTQ56HdwM9LPtDKFcdS76HY9tSzA7wRHFHE4fE4QPc1w3MaSt

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