How To Fix /SAPAPO/SEQ801 - Communication error for &1 destination: &2 error: &3 &4

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SEQ -

• Message number: 801

• Message text: Communication error for &1 destination: &2 error: &3 &4

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SEQ801 - Communication error for &1 destination: &2 error: &3 &4 ?

  The SAP error message /SAPAPO/SEQ801 typically indicates a communication error related to the SAP Advanced Planning and Optimization (APO) system. This error can occur when there are issues with the connection between the APO system and other systems, such as SAP ERP or other external systems.
  Causes:
  
  Network Issues: Problems with the network connection between the systems can lead to communication errors.
  Configuration Errors: Incorrect settings in the RFC (Remote Function Call) destination or in the APO system configuration can cause this error.
  System Downtime: The target system may be down or not reachable at the time of the communication attempt.
  Authorization Issues: The user or system may not have the necessary authorizations to perform the communication.
  Firewall or Security Settings: Firewalls or security settings may be blocking the communication between the systems.
  
  Solutions:
  
  Check Network Connectivity: Ensure that the network connection between the systems is stable and functioning properly. You can use tools like ping or traceroute to diagnose network issues.
  Verify RFC Destination: Go to transaction SM59 in the SAP GUI and check the configuration of the RFC destination mentioned in the error message. Ensure that the destination is correctly configured and test the connection.
  Check System Status: Verify that the target system is up and running. You can check the system logs or use transaction SM51 to see the status of the application servers.
  Review Authorizations: Ensure that the user or system has the necessary authorizations to perform the communication. Check the roles and authorizations assigned.
  Firewall Settings: If applicable, check the firewall settings to ensure that the necessary ports are open for communication between the systems.
  Check Logs: Review the application logs and system logs for any additional error messages that may provide more context about the issue.
  
  Related Information:
  
  
  Transaction Codes: 
  
  SM59: For managing RFC destinations.
  SM21: For viewing system logs.
  ST22: For analyzing dumps.
  SLG1: For application log analysis.
  
  
  
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  
  
  Documentation: Refer to the SAP Help Portal for documentation on configuring and troubleshooting SAP APO and RFC connections.
  
  
  If the issue persists after following these steps, it may be necessary to involve your SAP Basis team or SAP support for further investigation.