Transaction not yet indexed

5AmbE8eb5W6QxEy9MC51EePkSfMoPNzPg8aSqbb7GSKuZKqgcNgBCWMQJSxXh7dTeaH49NGntheWQiS4gVm8kMY7

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