<prompt> Translate the following text to SwahiliThird, how rigorous and defensible would customer-specific costs have to be in order to qualify as an acceptable base for a contract, and would the costing receive review by any outside party?  <response>: Kwa upande mwingine, ni kiasi gani cha gharama za wateja zinapaswa kuwa na msingi wa kukubalika kwa mkataba, na ni nini kinachohitajika ili kuamua gharama za mkataba? 