Which action is taken if a developer attempts to link a template with non-unique fields?

When a developer links a template with non-unique fields in Sitecore, the system handles this scenario by merging the fields instead of throwing an error or removing them. Merging allows the developer to maintain a clean and cohesive structure within the template. By combining the fields, Sitecore ensures that the relevant information can still be accessed and used effectively within the template context.

This merging capability is crucial in dynamic content management, where flexibility and adaptability are often needed. It prevents issues that may arise from redundancy or conflicting definitions by creating a single source of data that can be referenced consistently across linked templates. Thus, the approach promotes better data integrity and usability throughout the content management process, ultimately enhancing the developer's ability to design scalable and efficient templates in Sitecore.