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      Help Center/ API Gateway/ User Guide (Kuala Lumpur Region)/ FAQs/ API Calling
      Updated on 2024-08-07 GMT+08:00
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      API Calling

      • What Are the Possible Causes for an API Calling Failure?
      • What Should I Do If an Error Code Is Returned During API Calling?
      • Why Am I Seeing the Error Message "414 Request URI too large" When I Call an API?
      • What Should I Do If "The API does not exist or has not been published in the environment." Is Displayed?
      • Why Am I Seeing the Message "No backend available"?
      • What Are the Possible Causes If the Message "Backend unavailable" or "Backend timeout" Is Displayed?
      • Why Am I Seeing the Message "Backend domain name resolution failed" When a Backend Service Is Called?
      • Why Doesn't Modification of the backend_timeout Parameter Take Effect?
      • How Do I Switch the Environment for API Calling?
      • What Is the Maximum Size of an API Request Package?
      • How Do I Perform App Authentication in iOS System?
      • Why Can't I Create a Header Parameter Named x-auth-token for an API Called Through IAM Authentication?
      • App (Credential) FAQs
      • Can Mobile Apps Call APIs?
      • Can Applications Deployed in a VPC Call APIs?
      • Does APIG Support WebSocket Data Transmission?
      • Does APIG Support Persistent Connections?
      • How Will the Requests for an API with Multiple Backend Policies Be Matched and Executed?
      • Is There a Limit on the Size of the Response to an API Request?
      • How Can I Access Backend Services over Public Networks Through APIG?
      Parent topic: FAQs

      Previous topic: Why Does an API Failed to Be Called Across Domains?

      Next topic: What Are the Possible Causes for an API Calling Failure?

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