Quality control statement

I don’t know if I understand correctly your question. Organizations have the authority to decide what makes sense to include in a SOP. So, there is no compulsory requirement to add a quality control statement.

The following material will provide you more information about documentation:

- How to structure quality management system documentation - https://advisera.com/9001academy/knowledgebase/how-to-structure-quality-management-system-documentation/
- List of mandatory documents required by ISO 9001:2015 - https://advisera.com/9001academy/knowledgebase/list-of-mandatory-documents-required-by-iso-90012015/
- Free online training ISO 9001:2015 Foundations Course - https://advisera.com/training/iso-9001-foundations-course/
- Book - Managing ISO Documentation: A Plain English Guide - https://advisera.com/books/managing-iso-documentation-plain-english-guide/