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From July 1, 2023, Google is discontinuing support for Universal Analytics, creating problems for those using custom dimensions with methodologies tied to the current system. Accordingly, if you have a code for custom dimensions that is not working following the transition to Google Analytics 4 (GA4), changes will need to be made. You may find some of these changes outlined in the provided guidelines on open-source that could be of use to you. This source discusses adding custom dimensions on GA4 and was added on August 13, 2022. Using this information will ensure your code continues to function properly after the switch.
