[Jensson]

Unintentional fraud is probably way higher among immigrants, it is hard to avoid "fraud" when filling in forms if you don't understand all the rules, even worse if the form isn't even in your native language.

[einpoklum]

There is no "Unintentional fraud". If it's unintentional, it's a mistake. See also:

https://www.merriam-webster.com/dictionary/fraud