Implement-content-validation-rules-in-cms

Key Takeaways

• Field-level validation covers required fields, min/max length, regex patterns, and allowed value lists
• Document-level validation handles cross-field rules and conditional requirements (e.g., "if type is X, field Y is required")
• Custom validation functions let you run async checks, including calls to external APIs
• Validation should surface errors in real time as editors type, not only on save
• Distinguish between hard errors (block save) and warnings (allow save with notice)