How To Fix IUUC_MOD027 - Invalid system type; use system type S or R

IUUC_MOD027 - Overview

• Message type: E = Error

• Message class: IUUC_MOD - Message Class for IUCC Model Classes (Generics)

• Message number: 027

• Message text: Invalid system type; use system type S or R

Self-Explanatory Message

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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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message IUUC_MOD027 - Invalid system type; use system type S or R ?

  The SAP error message IUUC_MOD027 indicates that there is an issue with the system type configuration in the SAP Landscape Transformation (SLT) replication setup. This error typically arises when the system type specified in the configuration is not valid or recognized by the SLT framework.
  
  Cause:
  The error message "Invalid system type; use system type S or R" suggests that the system type defined in the SLT configuration is neither 'S' (Source) nor 'R' (Receiver). This can occur due to:
  
  Incorrect Configuration: The system type may have been incorrectly set during the configuration of the SLT system.
  Typographical Error: There might be a typo or an incorrect value entered in the configuration settings.
  System Type Not Supported: The system type being used is not supported by the SLT framework.
  
  
  Solution:
  To resolve the IUUC_MOD027 error, follow these steps:
  
  
  Check Configuration:
  
  Go to the SLT configuration transaction (usually LTRC).
  Verify the system type settings for the source and target systems.
  Ensure that