How To Fix CNV_DMC_SIN523 - Control key missing: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_SIN - Messages for s-innovations migration

• Message number: 523

• Message text: Control key missing: &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_SIN523 - Control key missing: &1 ?

  The SAP error message CNV_DMC_SIN523 with the description "Control key missing: &1" typically occurs during data migration processes, particularly when using the SAP Data Migration Cockpit (DMC) or similar tools. This error indicates that a required control key is missing for a specific operation or data record.
  Cause:
  
  Missing Control Key: The control key is a critical piece of information that defines how a particular operation should be processed. If it is missing, the system cannot determine how to handle the data.
  Configuration Issues: The control key may not be properly configured in the system, or it may not exist in the relevant tables.
  Data Mapping Errors: During the data migration process, if the mapping of source data to target data is incorrect or incomplete, it can lead to missing control keys.
  Inconsistent Data: The source data may have inconsistencies or missing values that prevent the control key from being populated.
  
  Solution:
  
  Check Control Key Configuration: Verify that the control key exists in the relevant configuration settings. You can check this in the SAP system under the appropriate transaction codes (e.g., OPL8 for production orders).
  Review Data Mapping: Ensure that the data mapping between the source and target systems is correctly defined. Make sure that all required fields, including the control key, are included in the mapping.
  Validate Source Data: Inspect the source data for any missing or incorrect values that could lead to the absence of the control key. Correct any inconsistencies found.
  Update Migration Templates: If you are using migration templates, ensure that they are up to date and include all necessary fields, including the control key.
  Consult Documentation: Refer to SAP documentation or notes related to the specific migration process you are using for any additional guidance or troubleshooting steps.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Transaction Codes: Familiarize yourself with transaction codes related to data migration and control key configuration, such as OPL8 (for control keys) or LTMC (for migration cockpit).
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered and resolved similar issues.
  Testing: After making changes, conduct thorough testing to ensure that the issue is resolved and that data migration proceeds without further errors.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.