In section 7.1 you were asked to plan for all of your product realization processes, including processes that do not result in the product or service that is delivered to the customer (customer-related processes, design and development and purchasing). Planning included identifying things like: Documentation Requirements Resources Measuring and monitoring activities Inspection and test activities [...]

In 7.5.1 the requirements focus on the processes that actually create your hardware or your service that is delivered to your customers. You are required to follow the plan that you created based on requirements in 7.1 A written procedure for this section will be useful in defining how you are meeting these requirements. By [...]