How To Fix SMT135 - TWUF_MAPPING_EXT: No entry for extension &1 trans. &2 counter &3

SAP Error Message - Details

• Message type: E = Error

• Message class: SMT -

• Message number: 135

• Message text: TWUF_MAPPING_EXT: No entry for extension &1 trans. &2 counter &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SMT135 - TWUF_MAPPING_EXT: No entry for extension &1 trans. &2 counter &3 ?

  The SAP error message SMT135, which states "TWUF_MAPPING_EXT: No entry for extension &1 trans. &2 counter &3," typically occurs in the context of the SAP System Landscape Transformation (SLT) or when dealing with data replication scenarios. This error indicates that there is a missing mapping entry for a specific extension in the transformation process.
  Cause:
  
  Missing Mapping Entry: The error suggests that the system is trying to find a mapping entry for a specific extension (indicated by &1) in the transformation process but cannot find it.
  Configuration Issues: There may be issues with the configuration of the SLT or the data replication setup, leading to missing or incorrect mappings.
  Data Model Changes: If there have been changes to the data model (like adding or removing fields) without updating the corresponding mappings, this error can occur.
  Transport Issues: If the transport of configuration settings was not successful or was incomplete, it could lead to missing entries.
  
  Solution:
  
  
  Check Mapping Configuration: 
  
  Go to the SLT configuration and check the mapping settings for the specific extension. Ensure that the mapping exists for the specified transaction and counter.
  You can use transaction code LTMC or LTMOM to check the mappings.
  
  
  
  Create Missing Entries: 
  
  If the mapping entry is indeed missing, you may need to create it manually. This can involve defining the mapping for the extension in the relevant transformation settings.
  
  
  
  Review Data Model Changes: 
  
  If there have been recent changes to the data model, ensure that all necessary mappings have been updated accordingly.
  
  
  
  Transport Configuration: 
  
  If the issue arose after a transport, verify that all necessary objects and configurations were transported correctly. You may need to re-transport or adjust the transport settings.
  
  
  
  Consult Documentation: 
  
  Refer to SAP documentation or notes related to SLT and the specific error message for additional guidance and troubleshooting steps.
  
  
  
  Check for SAP Notes: 
  
  Look for any relevant SAP Notes that might address this specific error or provide patches or updates that could resolve the issue.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SLT, LTMC, and LTMOM for managing data replication and transformations.
  SAP Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP Support for assistance.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.