Transaction not yet indexed

NngDp3AbcVppc9tmwioNCFE7qJUBkRLz3JqYbBJsBYVpqsyvNmaDXmxFtuG7fSdf7T1EPFUgb4yJdkML68TPFg5

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