We saw this week the difficulty in having a very specific DSD. Once the product component was considered a critical component it left us scrambling to find another replacement that would exactly meet the criteria. When design the specifications it should not be designed towards the supplier but rather what is actually feasible for the product. Making it specific to the one supplier or roughly specific to the supplier leaves the company very vulnerable to needing design changes. Not only is the concern that the design will not meet the criteria during designing but also this document is permanent. This means that if this supplier closes and you can no longer purchase from them you need to go through a massive change to qualify a new supplier.