Transaction not yet indexed

NhUMKM4tCBcmdDfpMjb9uxA5UvpCY85z1pTroDzVLRaXDnsLzqmPkPhxaTbyQ7o7NZUmfWvhVTXFGaDCTy8gFC6

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