Transaction not yet indexed

Nf6mmW9QtQ1YyZgLg5jPaffepADnVxEwMSYPWm6LabG29B9bpDvPK3kKNbKXyku4mnSDVT4tiuLuE9MWMrzE3PC

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