Transaction not yet indexed

21Ap4pkRFQVwvLPLTyRtejVCfsW7QVqchNwN4M4sU3cEYe6oaA5vp2Zevhw7VDGtvsNSeHGhGSBpYy2u8JfAH59T

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