Final answer:
The incorrect use case for Flow designer is when heavy scripting is required for automation or execution.
Step-by-step explanation:
The correct option that represents the incorrect use case for Flow designer is A) When heavy scripting is required to provide majority of automation or execution. Flow designer is a low-code visual platform that simplifies the automation of business processes. It allows users with little technical knowledge to orchestrate business processes across services, making option B incorrect. Additionally, Flow designer is designed to integrate with third-party systems, making option C incorrect as well.
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