How To Fix 00402 - Error establishing CPIC connection

SAP Error Message - Details

• Message type: E = Error

• Message class: 00 -

• Message number: 402

• Message text: Error establishing CPIC connection

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 00402 - Error establishing CPIC connection ?

  The SAP error message "00402 Error establishing CPIC connection" typically indicates a problem with the connection between the SAP application server and the database or another SAP system. CPIC (Common Programming Interface for Communication) is a protocol used for communication between SAP systems and other systems.
  Causes:
  
  Network Issues: There may be network connectivity problems between the SAP application server and the database or other SAP systems.
  Configuration Errors: Incorrect configuration settings in the SAP system or the database can lead to connection issues.
  Database Availability: The database server may be down or not reachable.
  Resource Limitations: The SAP system or database may be running out of resources (e.g., memory, connections).
  Firewall Restrictions: Firewalls may be blocking the necessary ports for communication.
  SAP Kernel Issues: There may be issues with the SAP kernel or the version being used.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the SAP application server and the database is stable and functioning. 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., instance profile, database connection settings) to ensure they are correct.
  Database Status: Check if the database is up and running. You can do this by logging into the database directly or using database management tools.
  Monitor Resources: Check the resource usage on both the SAP application server and the database server. Ensure that there are enough resources available (CPU, memory, connections).
  Firewall Settings: Review firewall settings to ensure that the necessary ports for SAP communication are open.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address known issues or provide patches.
  Restart Services: Sometimes, simply restarting the SAP application server or the database can resolve transient issues.
  Check Logs: Review the SAP system logs (transaction SM21) and the database logs for any additional error messages that may provide more context.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SM21 (System Log), SM37 (Job Monitoring), and ST22 (Dump Analysis) to gather more information about the error.
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed logs and error messages.
  Documentation: Refer to the official SAP documentation for more information on CPIC connections and troubleshooting steps.
  
  By following these steps, you should be able to diagnose and resolve the "00402 Error establishing CPIC connection" error in your SAP environment.