How To Fix S_UNIFIED_CON159 - &1 &2 &3 &4

SAP Error Message - Details

• Message type: E = Error

• Message class: S_UNIFIED_CON - Message Class for Unified Connectivity

• Message number: 159

• Message text: &1 &2 &3 &4

What causes this issue?

This RFC call was refused because it failed the Unified Connectivity
runtime checks. The function module is only executable in the same
system and the same client.

System Response

How to fix this error?

In order to call this function module from other systems or clients it
must be assigned to the Default Communication Assembly.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message S_UNIFIED_CON159 - &1 &2 &3 &4 ?

  The SAP error message S_UNIFIED_CON159 typically indicates an issue related to the Unified Connectivity (UCON) framework in SAP. This error can occur in various scenarios, often related to the configuration of connections or the handling of specific data types in the system.
  Cause:
  The error message S_UNIFIED_CON159 usually arises due to one of the following reasons:
  
  Configuration Issues: There may be a misconfiguration in the UCON settings or the connection parameters.
  Data Type Mismatch: The error can occur if there is a mismatch in the expected data types between the source and target systems.
  Network Issues: Problems with network connectivity or firewall settings can also lead to this error.
  Authorization Issues: The user may not have the necessary authorizations to perform the action that triggered the error.
  
  Solution:
  To resolve the S_UNIFIED_CON159 error, you can follow these steps:
  
  
  Check Configuration:
  
  Review the UCON configuration settings in the SAP system. Ensure that all parameters are correctly set up.
  Verify the connection settings for the source and target systems.
  
  
  
  Data Type Validation:
  
  Check the data types being used in the transaction or process that triggered the error. Ensure that they match the expected types in the target system.
  
  
  
  Network Connectivity:
  
  Test the network connection between the SAP system and the external system. Ensure that there are no firewall rules blocking the connection.
  Use tools like ping or telnet to check connectivity.
  
  
  
  Authorization Check:
  
  Ensure that the user executing the transaction has the necessary authorizations. Check the user roles and permissions related to UCON.
  
  
  
  Review Logs:
  
  Check the application logs (transaction SLG1) for more detailed information about the error. This can provide insights into what specifically caused the error.
  
  
  
  Consult Documentation:
  
  Refer to SAP Notes and documentation related to Unified Connectivity for any specific guidance or patches that may address the issue.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with the error message details and any relevant logs.
  
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  Documentation: Review the official SAP documentation on Unified Connectivity for best practices and configuration guidelines.
  
  By following these steps, you should be able to diagnose and resolve the S_UNIFIED_CON159 error in your SAP environment.