Transaction not yet indexed

MkTw4mSTCmmSEHJhLacFsUPHA8siMuy3VK2xeHnatUa4Vppj5WbxkqXZcqcfAAvVVToecY6vQPDTDMBYpxscaYZ

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