Transaction not yet indexed

1mM6YTnMcZDRUnH7b8upMgQBTJmdrMfo92XUV3DDqWfEx6pzVjGvvjuXHukUdSRecsdEeekeiM3M2n2nfFvRUBi

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