Generally the term "bankruptcy fraud" is applied to persons who file bankruptcy and falsify facts in their bankruptcy petition, hide assets, etc.
However, anyone (including a creditor) who is dishonest to the trustee or court can expose themselves to sanctions by the court or a potential fraud lawsuit.
If the debtor is involved in a mediation in which he or she is aware that a creditor is being dishonest, he or she should generally point out that dishonesty to the trustee or court through his or her attorney.
I don't know if this answered your question, so if not please let me know.
I hope this helps and a positive feedback is always appreciated if this was useful to you.
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