Transaction not yet indexed

NMpTYJ9izdUyWS7ejaEFp4EpsfCPKMdRvQRFzJKKzJBXXBX94eZVBHqxpqYJq65P9ZHp4awGFQn5URMEL7z6buZ

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