How To Fix IUUC_RT010 - Communication to sender failed

SAP Error Message - Details

• Message type: E = Error

• Message class: IUUC_RT - IUUC Runtime Messages

• Message number: 010

• Message text: Communication to sender failed

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 IUUC_RT010 - Communication to sender failed ?

  The SAP error message IUUC_RT010, which indicates "Communication to sender failed," typically occurs in the context of SAP Landscape Transformation (SLT) replication. This error can arise due to various reasons related to network issues, configuration problems, or system settings. Below are some common causes, potential solutions, and related information for this error:
  Causes:
  
  Network Issues: There may be network connectivity problems between the source system and the SLT system.
  Configuration Errors: Incorrect configuration settings in the SLT system or the source system can lead to communication failures.
  Authorization Issues: The user credentials used for the connection may not have the necessary authorizations.
  System Load: High load on the source or target system can lead to timeouts or communication failures.
  Firewall Settings: Firewalls or security settings may be blocking the communication ports required for SLT replication.
  Transport Layer Security (TLS): If TLS is enabled, there may be issues with the certificates or the configuration.
  
  Solutions:
  
  
  Check Network Connectivity:
  
  Ensure that there is proper network connectivity between the source and SLT systems. You can use tools like ping or telnet to test connectivity.
  
  
  
  Review SLT Configuration:
  
  Verify the configuration settings in the SLT system. Check the connection settings, replication settings, and ensure that the source system is correctly defined.
  
  
  
  Check User Authorizations:
  
  Ensure that the user credentials used for the connection have the necessary authorizations to perform the replication tasks.
  
  
  
  Monitor System Load:
  
  Check the performance and load on both the source and SLT systems. If either system is under heavy load, consider optimizing performance or scheduling replication during off-peak hours.
  
  
  
  Firewall and Security Settings:
  
  Review firewall settings to ensure that the required ports for SLT communication are open. Common ports include 443 (HTTPS) and 80 (HTTP).
  
  
  
  TLS Configuration:
  
  If TLS is being used, ensure that the certificates are valid and properly configured. Check for any issues related to certificate expiration or trust.
  
  
  
  Check Logs:
  
  Review the SLT logs and the application logs in both the source and SLT systems for more detailed error messages that can provide additional context.
  
  
  
  Restart Replication:
  
  Sometimes, simply restarting the replication process can resolve transient issues.
  
  
  
  Related Information:
  
  SAP Notes: Check for relevant SAP Notes that may address specific issues related to IUUC_RT010. SAP Notes often provide patches or workarounds for known issues.
  SLT Documentation: Refer to the official SAP documentation for SLT for detailed configuration and 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.
  
  If the problem persists after trying the above solutions, it may be necessary to involve SAP support for further assistance.