Transaction not yet indexed

5k21J3YUB94s5DjmFtYCSCK3cFh7EcuNkXPrEsJEDSPvXbMHVZm2fvEm2o2u7hV3mRcAjk9ArqN53M3NiaFxCEj6

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