On the debit side, however, reliance on outside suppliers may make the firm vulnerable to disruptions in supplies, particularly missed delivery dates, problems with the quality of bought-in components, and ‘unreasonable’ terms and conditions imposed by powerful suppliers. The decision to produce internally or outsource will depend upon the combined production costs and TRANSACTION COSTS of the alternative supply source. See TRANSACTION, INTERNALIZATION, MAKE OR BUY, VERTICAL INTEGRATION.