Multiple BOM (Restaurant scenario)

Hi @Mhmd_Bosaqir

I cerebrate if the issue is because of your requisites of UOM changes then you should take purchase of your raw material by applying UOM conversion factor to your RM items first

For more details, please refer this…
https://frappe.github.io/erpnext/user/manual/en/buying/articles/purchasing-in-different-unit

Or

You can refer below quite kindred case for more conception…