The United Nations has recently released a publication on domestic violence. The report states:
Legislation should not include a provision criminalizing false accusations/allegations.
Legislation on violence against women sometimes contains a provision that falsely accusing someone under the legislation constitutes a criminal offense. Provisions of this kind may dissuade complainants/survivors from filing cases due to fear of not being believed, and there is a high risk that such provisions may be applied incorrectly and used by the defendant/offender for purposes of retaliation. Intentionally misleading the court is commonly deal with in other areas of the law and should not be included in legislation on violence against women.
Source: UN Department of Economic and Social Affairs: Handbook for Legislation on Violence Against Women. New York, 2010. Page 44. http://www.un.org/womenwatch/daw/vaw/v-handbook.htm