How To Fix SMT120 - No buffer entry: Mapping &1 step &2 version &3 extension &4

SAP Error Message - Details

• Message type: E = Error

• Message class: SMT -

• Message number: 120

• Message text: No buffer entry: Mapping &1 step &2 version &3 extension &4

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 SMT120 - No buffer entry: Mapping &1 step &2 version &3 extension &4 ?

  The SAP error message SMT120 "No buffer entry: Mapping &1 step &2 version &3 extension &4" typically occurs in the context of SAP Data Services or SAP Landscape Transformation (SLT) when there is an issue with the data mapping or transformation process. This error indicates that the system is unable to find a specific mapping entry in the buffer for the given parameters.
  Causes:
  
  Missing Mapping Entry: The specified mapping for the given step/version/extension does not exist in the buffer.
  Configuration Issues: There may be a misconfiguration in the data mapping or transformation settings.
  Buffer Management: The buffer may not have been properly initialized or populated with the required mapping entries.
  Versioning Issues: The version specified may not be active or may not have been properly deployed.
  Data Model Changes: Changes in the underlying data model that are not reflected in the mapping configuration.
  
  Solutions:
  
  Check Mapping Configuration: Verify that the mapping for the specified step/version/extension exists and is correctly configured in the system.
  Refresh Buffer: If the buffer is not populated, try refreshing or reinitializing it. This may involve restarting the relevant services or processes.
  Review Versioning: Ensure that the version specified in the error message is correct and that it is active. If necessary, switch to a different version that is known to be working.
  Check for Changes: If there have been recent changes to the data model or mappings, ensure that all necessary updates have been made and that the mappings are still valid.
  Consult Documentation: Refer to SAP documentation or support resources for specific guidance on the error and potential fixes.
  Contact SAP Support: If the issue persists, consider reaching out to SAP support for assistance, providing them with the full error message and context.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., SLT configuration transactions) that may help in diagnosing the issue.
  Logs and Traces: Review system logs and traces for additional context around the error, which may provide insights into what went wrong.
  
  By following these steps, you should be able to identify the root cause of the SMT120 error and implement a solution to resolve it.