Transaction not yet indexed

Mktfp9XXbKgxnbcZw9mwpL4Wv5FzR9ZBZHa6RqbFbVYbFFqE4tEPZPk5pXqc57o9XsENdEVmDpnLdcKaUYmhPB9

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