Transaction not yet indexed

5AmbYiyS4bkyp1d3mJfqfN8CFcXrV3oEFB4MPFJpVKkf3tzVbRY5f7ZXbYUUtP7Nq1pPhUEyzKRwugcsnkSjGLC4

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