Transaction not yet indexed

MLkC2VztvVV9zQj2qZ6oXTszosAjf4cJGrsGoBHjMEB29YASa7zJZtkAj9rtiy3JprXqeXXBkopyF1QEDrhQkN5

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