How To Fix REST_CORE_TEXTS022 - HTTP client - communication error

SAP Error Message - Details

• Message type: E = Error

• Message class: REST_CORE_TEXTS -

• Message number: 022

• Message text: HTTP client - communication error

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message REST_CORE_TEXTS022 - HTTP client - communication error ?

  The SAP error message "REST_CORE_TEXTS022 HTTP client - communication error" typically indicates that there is a problem with the HTTP communication between the SAP system and an external service or API. This error can arise from various causes, and understanding these can help in troubleshooting and resolving the issue.
  Possible Causes
  
  
  Network Issues: There may be network connectivity problems between the SAP system and the external service. This could be due to firewall settings, proxy configurations, or general network outages.
  
  
  Incorrect URL or Endpoint: The URL or endpoint being called may be incorrect or not reachable. This could be due to a typo or changes in the external service's API.
  
  
  Authentication Issues: If the external service requires authentication (e.g., API keys, OAuth tokens), and the credentials are missing or incorrect, this can lead to communication errors.
  
  
  Service Unavailability: The external service may be down or experiencing issues, leading to failed requests.
  
  
  Timeouts: If the request takes too long to respond, it may time out, resulting in a communication error.
  
  
  SSL/TLS Issues: If the communication is over HTTPS, there may be issues with SSL certificates, such as expired certificates or untrusted certificate authorities.
  
  
  Solutions
  
  
  Check Network Connectivity: Ensure that the SAP system can reach the external service. You can use tools like ping or telnet to test connectivity to the service's URL.
  
  
  Verify URL and Endpoint: Double-check the URL or endpoint being used in the HTTP request. Make sure it is correct and that the external service is available.
  
  
  Review Authentication Credentials: Ensure that any required authentication credentials are correctly configured in the SAP system. This may involve checking API keys, tokens, or user credentials.
  
  
  Monitor External Service Status: Check the status of the external service to see if it is operational. This may involve checking their status page or contacting their support.
  
  
  Increase Timeout Settings: If timeouts are suspected, consider increasing the timeout settings in the HTTP client configuration within SAP.
  
  
  Check SSL/TLS Configuration: If using HTTPS, ensure that the SSL certificates are valid and properly configured. You may need to import the service's certificate into the SAP system's trust store.
  
  
  Review SAP Logs: Check the SAP application logs (transaction SLG1) for more detailed error messages that may provide additional context about the communication error.
  
  
  Related Information
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address specific issues related to HTTP communication errors.
  Documentation: Review the documentation for the specific SAP module or service you are using to understand the expected configuration and requirements for HTTP communication.
  Community Forums: Consider checking SAP Community forums or other technical forums for similar issues and solutions shared by other users.
  
  By systematically checking these areas, you should be able to identify and resolve the cause of the "REST_CORE_TEXTS022 HTTP client - communication error."