The documentation system is key to cGMP and establishes formats and traceability. Documents must be maintained in a controlled manner and provide records for compliance. Written procedures exist for all production, quality control, packaging and labeling processes. Documentation provides organized information that serves as proof and answers for regulators: what is being done, why, if procedures are being followed, and if things are under control. The documentation system integrates tasks like generation, review, approval, distribution and retention/destruction of documents.