costs expensed/depreciated through costs of revenue

Hello!
I have some difficulties to translate a financial text about accounting. Anyone can help me with this sentence?
All costs should be expensed/depreciated through costs of revenue...
I don't have any idea about what it means...
All help will be appreciate! Thank you!:)

Hi Kopito, here is my proposed translation

Hope it helps :)

Todos los costos deben ser llevados a gastos/ depreciados a través de los costos relacionados con la producción de renta