Transaction not yet indexed

518vmh6V2itSfcLgphPunEPwEWusuqc3zQiFRwmSXjpSZPCFit6UCtV5oEi6dFY7AWzFBpMp1zoyfe1pu3ZHR6Jx

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