@Jeremy D. Busselman - Thanks for the question and using MS Q&A platform.
It is possible that you received the retirement notice email because you have a subscription that includes Azure Synapse Analytics, even if you are not currently using it. The email may have been sent to all subscribers who have access to Azure Synapse Analytics, regardless of whether they are actively using it or not.
Scroll down to find the account information details in your subscription
To confirm whether you have any resources that need to be upgraded, you can check your Azure subscription for any resources related to Azure Synapse Analytics or Apache Spark. You can also check your Azure billing history to see if you have been charged for any usage of these services.
If you do have resources that need to be upgraded, you can follow the guidance provided in the retirement notice email to transition to newer version as Azure Synapse runtime for Apache Spark 3.1 will be retired on 26 January 2024 – Transition to Apache Spark 3.3 or newer to ensure they continue to run as usual. If you have code that's incompatible with the version you transition to, you can troubleshoot it using the guidance provided in the email.
Note: If you do not have any resources that need to be upgraded, you can safely ignore the retirement notice email.
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