Hello,

There are many consequences of the insufficient design control. The design control must contain different stages such user need, design input and design output. User need is important because we need to know what the user expects. For the design inputs we must know what this product will do. In the design output we must figure out the way to construct out product. Because of the insufficient design control the product might not work properly. There are also cases when the design doesn’t meet the needs of the users.
It’s important to use the design verification and validation to ensure that the product is designed correctly.

Thanks