Transaction not yet indexed

UMm6bKX36QjfcZuFekQbpZ96A1HDHsS6NZab31bcgNqcTcs6gu8zpF7T43KYxENRLoTY9zvu1K9YxY4nSZPkJSZ

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