The error message "multiple definitions for the operation" typically occurs when you have multiple GraphQL operations (e.g., queries, mutations, subscriptions) with the same name within the same GraphQL document. Each operation in a GraphQL document must have a unique name to avoid conflicts.

To resolve this error, you need to ensure that all GraphQL operations in your document have distinct names. Here are the steps you can follow:

  1. Check Your GraphQL Document: Review your GraphQL document (e.g., a .graphql file or a string containing GraphQL queries/mutations) to identify if there are any operations with the same name.

  2. Ensure Unique Names: Make sure that each operation (query, mutation, subscription) has a unique name. If you have operations with the same name, rename them to make them unique.

    For example, suppose you have two queries with the same name "getUser". You should rename one of them to "getUserById" or any other suitable name.

    query getUser { # Query details... } query getUser { # Query details... }


    query getUser { # Query details... } query getUserById { # Query details... }
  3. Check Fragments: If you are using fragments in your GraphQL document, ensure that the fragment names are also unique.

    fragment userFields on User { id name } fragment userFields on User { email }


    fragment userFields on User { id name } fragment userEmail on User { email }
  4. Verify Imported Documents: If you are importing other GraphQL documents into your main document, ensure that the imported documents also have unique operation names. Double-check any imported documents to avoid conflicts.

  5. Check Apollo Client or GraphQL Server Code: If you are using Apollo Client or a GraphQL server, ensure that the code handling the GraphQL operations does not inadvertently create duplicate names.

After making these changes, save your GraphQL document and try running your application again. The "multiple definitions for the operation" error should no longer appear, and your GraphQL operations should work as expected.

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