Design and development or customer support?

"I am looking at the design and development requirements of the standard which, if I read it right relates to the D&D of products rather than services. I am clear about the inputs required, the controls needed and the outputs if a product is being made from scratch. However, if a company receives a request from a customer for one of their ready-made products to carry out a cleaning operation and the only thing the company does is to test samples submitted by the customer to determine which of their existing products is suitable to clean it properly is the testing and recommendation regarded as D&D? This would appear to be little more than assisting the customer buy the right product rather than D&D a new product?