What needs to be fixed

The Schema.org Event plugin currently does not provide dedicated fields for some useful and Google-recommended Event properties:

• endDate
• eventStatus
• offers
• performer

Google Search Console reports these missing properties as non-critical issues/warnings.
While these fields are optional, they are meaningful for describing events.

Why this should be fixed

Google documents these properties as recommended Event properties:

• endDate: end date and time of the event
• eventStatus: scheduled, cancelled, etc.
• offers: ticket information, price, etc.
• performer: person or performing group appearing at the event

Adding these fields would improve the quality of Joomla’s generated Event structured data.

Suggested implementation

Add the following fields to plugins/schemaorg/event/forms/schemaorg.xml:

1. endDate
2. eventStatus
3. offers
   • repeatable subform
4. performer
   • repeatable subform

Additional context

This is not a critical validation error, because the fields are optional. However, they are useful and recommended for real-world event pages, especially concerts, festivals and ticketed events.

Google Event structured data documentation:
https://developers.google.com/search/docs/appearance/structured-data/event