Transaction not yet indexed

Hf88AJgn9uY3zCjmBJCaqYkr2Yvw6AcV7MCNSTrAGc4CqNrC6L8zaMK6CY6GMTSqwYm78o7dcPExvQQeD1jSpiR

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