How To Fix CNV_DMC_MC113 - Key field &1 of &3 will be excluded from the staging table; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DMC_MC - Migration Object Modeler

• Message number: 113

• Message text: Key field &1 of &3 will be excluded from the staging table; see long text

What causes this issue?

For view &V2&, the key field &V1& of the source structure &V3& is set to
?Not Visible?. This means that the key field will not be part of the
generated staging table for this view. This may result in data loss
during the transfer. We recommend checking whether you really want to
exclude the key field.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_DMC_MC113 - Key field &1 of &3 will be excluded from the staging table; see long text ?

  The SAP error message CNV_DMC_MC113 indicates that a key field in a staging table is being excluded from processing during a data migration or conversion process. This typically occurs in the context of using the SAP Data Migration Cockpit (DMC) or similar tools for data migration.
  Cause:
  The error message usually arises due to one of the following reasons:
  
  
  Key Field Issues: The key field specified in the error message may not be properly defined in the source or target system. This could be due to missing data, incorrect data types, or mismatched definitions between the source and target systems.
  
  
  Data Integrity Violations: The data in the key field may violate integrity constraints, such as uniqueness or referential integrity, which prevents it from being included in the staging table.
  
  
  Configuration Issues: There may be configuration issues in the migration settings that lead to the exclusion of certain fields.
  
  
  Mapping Errors: The mapping of fields between the source and target systems may not be correctly set up, leading to the exclusion of key fields.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Field Definitions: Verify that the key field is correctly defined in both the source and target systems. Ensure that the data types and lengths match.
  
  
  Data Validation: Review the data in the key field for any inconsistencies or violations of integrity constraints. Cleanse the data if necessary to ensure it meets the requirements.
  
  
  Review Migration Settings: Check the migration settings in the Data Migration Cockpit to ensure that the key fields are correctly configured for inclusion in the staging table.
  
  
  Mapping Review: Ensure that the mapping of fields between the source and target systems is correctly set up. Adjust the mapping if necessary to include the key field.
  
  
  Consult Long Text: The error message suggests checking the long text for more details. This long text may provide specific information about why the key field is being excluded.
  
  
  Logs and Traces: Review any logs or traces generated during the migration process for additional context or error messages that may help identify the root cause.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to the Data Migration Cockpit and the specific error message for any known issues or patches.
  Documentation: Refer to the official SAP documentation for the Data Migration Cockpit for guidance on configuring and troubleshooting data migration processes.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify the cause of the CNV_DMC_MC113 error and implement a solution to include the key field in the staging table.