Transaction not yet indexed

ngxgTMkoYmcfNTE8J7TidxYkwiDEX4LCLqZ8NNTkiE7TspEq6CFPgjD5DNcNcfCHK7iiTZDcjhRWDPmb7JFng7Z

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