How To Fix IUUC_MAIN123 - Check manually if all external interfaces have been disabled

IUUC_MAIN123 - Overview

• Message type: E = Error

• Message class: IUUC_MAIN - IUUC: Main Message class

• Message number: 123

• Message text: Check manually if all external interfaces have been disabled

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_MAIN123 - Check manually if all external interfaces have been disabled ?

  The SAP error message IUUC_MAIN123 indicates that there are external interfaces that have not been disabled, which can lead to issues during the execution of certain processes, particularly in the context of SAP Landscape Transformation (SLT) or Data Replication.
  
  Cause:
  The error typically arises when the system is trying to perform a data replication or transformation task, but there are still active external interfaces that could interfere with the process. This can happen if:
  
  External systems are still connected and sending data.
  There are ongoing data replication tasks that have not been properly stopped.
  Configuration settings in the SLT or related systems have not been correctly adjusted to disable these interfaces.
  
  
  Solution:
  To resolve the IUUC_MAIN123 error, follow these steps:
  
  
  Check Active Interfaces:
  
  Go to the SLT configuration and check for any active external interfaces. This can usually be done in transaction code LTRC (SLT Monitoring).
  Look for any replication tasks that are still running or any connections that are