Transaction not yet indexed

666MffVvsf2L75vAFfTiKkk8c7rBJwSRPWj2aFtrkEznZoYNHvmM5T8p5QBsef2MdQLN3QQJbGkTwq9jZts7m4wd

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