You are development supplier. Customer wants that you make sampling for note 3.
Note 1,3 and 6 are connected with your product and not process. I will explain to you simplified - Note 1 means in german "freigabe" so part fully approved by customer. Note 3 part ok for serial production (some minor flaws to correct), note 6 part not ok for serial production.
Every project has milestones which are set already at the begining of the project when the sampling or "bemusterung" for certain note should be done. If you have access to vw portal check beon - bemusterung online, where this is done. This is quite a long topic to cover in one post and for which there is also special training. Here, communication with customer is crucial so dont be afraid to ask