Monetary measures may be accurate "on average" but not at the household level. Yet the MPI requires each indicator to accurately depict deprivation status at the household level. If a relative poverty line is used for income (as in Alkire and Apablaza 2016), then the poverty focus and deprivation axioms do not hold. Having a mixture of relative and absolute cut-offs also is conceptually challenging. For example, in the case of Mexico, it appears that economic and non-economic aspects of poverty are equally weighted. But in fact, the identification procedure is designed to exclude all persons who are not income poor from having the possibility of being identified as poor.