Hi @Abhishek M ,
Thanks for using Microsoft Q&A!!
Azure Open AI studio chat playground doesn't use the
AZURE_OPENAI_SYSTEM_MESSAGE environment setting. Chat Playground use the System Template as you select it under the Assistant setup section as shown in the below screenshot -
The GitHub repository you are referring to contains the chat webapp source code that gets deployed using the above step and AZURE_OPENAI_SYSTEM_MESSAGE environment variable is used by the web application deployed by using the "Deploy To" button.
Please let me know if you have any questions.
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