When is template inheritance not advised for fields with the same name?

Template inheritance in Sitecore can benefit organizational efficiency by allowing fields to be reused in derived templates. However, there are scenarios where it may not be advisable, particularly when fields share the same name but require different configurations or behaviors.

When fields require different field sources, template inheritance may lead to complications. This is because the derived template will inherit the parent template's field settings, including the field source. If the fields in the derived template need to behave differently or pull data from different sources, using the same field name will create confusion and potentially incorrect data retrieval. In such cases, it’s more prudent to define separate fields in the derived templates, allowing for the flexibility to specify distinct properties, behaviors, and field sources tailored to each template's specific needs.

The other contexts mentioned, such as when fields are not used in presentations or need different validation, don't necessarily pose the same risk of confusion or incorrect behavior as conflicting field sources do. Therefore, situations requiring different field sources clearly highlight the risks associated with template inheritance for fields of the same name and highlight the importance of maintaining clarity in template structure.