Planning niches for cabinets, wardrobes, etc.

Hello everyone, what dimensions do the niches you have planned for wardrobes, cloakroom cabinets, etc. have? I am asking because we are currently facing decisions down to the centimeter in this regard. For the kitchen, we received a specific number from the kitchen studio (niche depth 63cm). However, we lack a precise centimeter measurement for the wardrobe and the like. How should the niches be planned as standardized as possible? Thanks!