You now see a confirmation message when you select the multi-select picklist field type when creating a custom field. The message reminds you to review the limitations of multi-select picklist fields before proceeding. We delivered this feature thanks to your ideas on IdeaExchange.
Where: This change applies to Lightning Experience and Salesforce Classic in all editions.
How: Multi-select picklists can be useful for user interface and data standardization. However, they provide limited reporting capabilities and can be difficult to use in automation and formulas. Use multi-select picklists only in specific situations where their use maximizes their benefits. This confirmation message ensures that you’re aware of potential issues when using this field type.