Transaction not yet indexed

NMkfDQJLJuR2ygFcihDkpeNYtWN9sU4F3jBuGvWgGsWYxvNGRBjXLvsXqxJUC9MKkSGeeWGK9xGmApRVG8QRCPq

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