Transaction not yet indexed

AmUJDkA39Fpzs8bTJa3sEf2nkHkefaqBQoQffrfZXf6CjwoiMFxPY5As6GqQGXfWMxTkhrcQNbSCJqLEREHhPY8

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