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ERROR GRAPHQL_VALIDATION_FAILED
GraphQL Validation Error
REST API Error
The GraphQL query failed schema validation before execution.
Root Cause
The query references fields that do not exist in the schema, uses incorrect argument types, or has syntax errors.
How to Fix
Check the error message for the specific validation failure. Use a GraphQL IDE (GraphiQL, Apollo Studio) to validate queries against the schema.
Quick Summary
GraphQL validation failed, the query does not match the schema. Check the error message for the specific field or type issue. Use GraphiQL or Apollo Studio to validate queries interactively.
Key Takeaways
Key Takeaways
- Validation errors occur before execution, the query is rejected immediately
- The error message specifies which field or type is invalid
- Use GraphiQL or Apollo Studio Sandbox to validate queries against the live schema
- Generate TypeScript types from the schema to catch errors at compile time
Use Cases
When to use it
- Querying a field that does not exist in the schema
- Wrong argument type
- Missing required argument
Watch out
Common Mistakes
- Not using a typed GraphQL client, generate types from the schema to catch errors at compile time
- Not checking the schema after a backend update, schema changes can break existing queries
FAQ
GRAPHQL_VALIDATION_FAILED GraphQL Validation Error, Frequently Asked
How do I generate TypeScript types from a GraphQL schema?
Use GraphQL Code Generator: npx graphql-codegen --config codegen.yml to generate typed hooks and query types.
Still having issues?
Check your network logs or use our developer tools to inspect headers, decode tokens, or validate your requests.