How To Fix CH193 - Connection could not be established

SAP Error Message - Details

• Message type: E = Error

• Message class: CH - CAD/PP integration messages

• Message number: 193

• Message text: Connection could not be established

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.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CH193 - Connection could not be established ?

  The SAP error message CH193, which states "Connection could not be established," typically indicates that there is an issue with the connection to a system or service that SAP is trying to access. This could be related to various components, such as database connections, RFC (Remote Function Call) connections, or connections to external systems.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP system and the target system.
  Configuration Errors: Incorrect configuration settings in the SAP system or the target system can prevent a successful connection.
  Service Availability: The target service or system may be down or not running.
  Firewall Restrictions: Firewalls may be blocking the connection between the SAP system and the target system.
  Authentication Issues: Incorrect credentials or authentication methods can lead to connection failures.
  SAP Gateway Issues: Problems with the SAP Gateway configuration can also lead to connection issues.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the SAP system and the target system is active. You can use tools like ping or traceroute to diagnose network issues.
  Review Configuration Settings: Verify the configuration settings in the SAP system (e.g., RFC destination settings) and ensure they are correct.
  Check Service Status: Ensure that the target service or system is up and running. If it is down, you may need to restart it or contact the system administrator.
  Firewall Configuration: Check firewall settings to ensure that they are not blocking the required ports for the connection.
  Validate Credentials: Ensure that the correct username and password are being used for authentication. If necessary, reset the credentials.
  SAP Gateway Configuration: Review the SAP Gateway settings and ensure that they are correctly configured to allow connections.
  Logs and Traces: Check the SAP system logs (transaction SM21) and traces (transaction ST22) for any additional error messages that may provide more context about the issue.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to the CH193 error message.
  Documentation: Refer to SAP documentation for detailed information on configuring connections and troubleshooting connectivity issues.
  Support: If the issue persists, consider reaching out to SAP support for further assistance.
  
  By systematically checking these areas, you should be able to identify and resolve the cause of the CH193 error message in your SAP environment.