Is review text mandatory in the Review Schema?

In Review Schema, the review text (reviewBody) is not technically a required field, but it is generally recommended to include it to enhance content credibility and search engines' understanding of the review. According to Schema.org specifications, the core required properties for the Review type include `itemReviewed` (the object being reviewed), `author` (the reviewer), and `reviewRating` (rating information), while `reviewBody` is a recommended but non-mandatory field. Scenarios for including review text: When the review content needs to specifically describe experiences, details, or reasons, `reviewBody` can help search engines more accurately parse the evaluation value and increase the possibility of rich snippet display (such as showing review snippets in search results). Scenarios for not including review text: If the review exists in a pure rating form (such as only star ratings), `reviewBody` can be omitted, but other core fields must be ensured to be complete. It is recommended to include review text in most cases, especially for detailed review content, which helps optimize the information richness of search results and enhance users' willingness to click.