Transaction not yet indexed

5ffZZvwc4egM9VbeWNj3VKDKPwbYAFYz7ZGpPS2CsVxaAsHFgn6F15fGZiZuaoTYc1K6W4Ex4YUDWMX8EGKtAHS6

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