Good automated manufacturing practices

I would like to know what is good automated manuturing practices

Good Automation Manufacturing practices is also known as GAMP. You can purchase the guidelines from the ISPE. It is a very complete guideline that provide templates on how to write User Requirements (URS), Functional Specs (FRS), IQ/OQ/PQ for automated systems.

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For more details on GAMP and how to purchase GAMP guides. If you have any specific questions on GAMP I can help.