How To Fix CMAP103 - ATMP [&1]: no source attribute entry allowed (no single-src mapping!)

SAP Error Message - Details

• Message type: E = Error

• Message class: CMAP - CSM Messages

• Message number: 103

• Message text: ATMP [&1]: no source attribute entry allowed (no single-src mapping!)

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CMAP103 - ATMP [&1]: no source attribute entry allowed (no single-src mapping!) ?

  The SAP error message CMAP103 ATMP [&1]: no source attribute entry allowed (no single-src mapping!) typically occurs in the context of data mapping or transformation processes, particularly when working with SAP Master Data Governance (MDG) or SAP Data Services. This error indicates that there is an issue with the mapping configuration, specifically related to source attributes.
  Cause:
  
  
  Missing Source Mapping: The error suggests that there is no valid source attribute mapping defined for the target attribute you are trying to populate. This can happen if the source attribute is not correctly defined or if it is missing entirely in the mapping configuration.
  
  
  Multiple Source Attributes: The error may also arise if the system expects a single source attribute for a target attribute, but multiple source attributes are defined instead.
  
  
  Incorrect Configuration: There may be a misconfiguration in the data model or mapping settings that leads to the system not recognizing the source attributes correctly.
  
  
  Solution:
  
  
  Check Mapping Configuration: Review the mapping configuration in the relevant data model or transformation process. Ensure that each target attribute has a corresponding single source attribute defined.
  
  
  Define Source Attributes: If a source attribute is missing, add it to the mapping configuration. Make sure that the source attribute is correctly defined and is compatible with the target attribute.
  
  
  Review Data Model: If you are using a data model, ensure that the data model is correctly set up and that the relationships between source and target attributes are properly defined.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on configuring mappings and resolving common errors related to data mapping.
  
  
  Testing: After making changes, test the mapping again to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional 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.
  Debugging: If you have access to debugging tools, consider using them to trace the execution and identify where the mapping is failing.
  
  By following these steps, you should be able to identify the root cause of the CMAP103 error and implement a solution to resolve it.