How To Fix /SAPAPO/MC01155 - Identifier for mapping changed from '&1' to '&2'

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/MC01 -

• Message number: 155

• Message text: Identifier for mapping changed from '&1' to '&2'

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/MC01155 - Identifier for mapping changed from '&1' to '&2' ?

  The SAP error message /SAPAPO/MC01155 indicates that there has been a change in the identifier used for mapping in the Advanced Planning and Optimization (APO) module. This typically occurs when there is a mismatch or inconsistency in the mapping identifiers between different systems or within the same system after a change has been made.
  Cause:
  
  Change in Master Data: The identifier for mapping may have been changed in the master data, such as a change in the material number, location, or other key attributes.
  Data Migration or Upload: If data was migrated or uploaded into the system, it may have introduced inconsistencies in the identifiers.
  Configuration Changes: Changes in configuration settings related to the mapping of data can lead to this error.
  Transport Issues: If changes were transported from one system to another (e.g., from development to production), there may be discrepancies in the identifiers.
  
  Solution:
  
  Check Master Data: Verify the master data for the relevant objects (e.g., materials, locations) to ensure that the identifiers are consistent and correct.
  Review Change Logs: Look at the change logs to identify when and why the identifier was changed. This can help in understanding the context of the change.
  Update Mapping: If the mapping is incorrect, update it to reflect the correct identifiers. This may involve adjusting settings in the APO system.
  Re-run the Process: After making the necessary corrections, re-run the process that triggered the error to see if it resolves the issue.
  Consult Documentation: Refer to SAP documentation or notes related to this error message for any specific guidance or patches that may be applicable.
  Contact SAP Support: If the issue persists and cannot be resolved through the above steps, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes like /SAPAPO/MC62 (for maintaining the mapping) or /SAPAPO/MC65 (for checking the data) to investigate the issue further.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  System Logs: Review system logs for any additional error messages or warnings that may provide more context about the issue.
  
  By following these steps, you should be able to identify the root cause of the error and implement a solution to resolve it.