Currently, when users create a flow in Flow Builder that includes WhatsApp buttons or list messages, there is no indication of the maximum character limit for button text. Users can enter any text and save the flow successfully without receiving any validation error or warning. However, if the button text exceeds WhatsApp's character limit, the flow fails during testing or execution. This creates confusion because the configuration appears valid during setup but does not work when triggered.

Display the character limit and provide real-time validation when users configure WhatsApp buttons or list messages. If the text exceeds the allowed limit, show a warning or prevent the flow from being saved until the issue is resolved.

This enhancement would help users create compliant button and list message content, reduce failed flow executions, and improve the overall Flow Builder experience by providing clear guidance during setup.