How To Fix CNV_DCII_COMM003 - Table &1 has no key-field of domain &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_DCII_COMM - messages of objects of dev class CNV_DCII_COMM

• Message number: 003

• Message text: Table &1 has no key-field of domain &2

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 CNV_DCII_COMM003 - Table &1 has no key-field of domain &2 ?

  The SAP error message CNV_DCII_COMM003 indicates that a specific table (denoted as &1 in the error message) does not have a key field defined for a particular domain (denoted as &2). This error typically arises during data conversion or migration processes, particularly when using SAP's Data Conversion Workbench or similar tools.
  Cause:
  
  Missing Key Field: The table in question does not have a primary key or a unique key field defined. In SAP, key fields are essential for identifying records uniquely.
  Domain Issues: The domain specified may not be correctly associated with any field in the table, or the field that is supposed to use this domain is not defined as a key field.
  Data Model Changes: If there have been changes to the data model (e.g., during a system upgrade or migration), the expected key fields may have been altered or removed.
  
  Solution:
  
  
  Check Table Definition: 
  
  Go to the Data Dictionary (transaction SE11) and check the definition of the table &1. Ensure that there is at least one key field defined.
  
  
  
  Define Key Field:
  
  If the table lacks a key field, you may need to define one. This can be done by modifying the table structure in SE11 and adding a suitable field as a key.
  
  
  
  Review Domain Assignment:
  
  Ensure that the domain &2 is correctly assigned to a field in the table. If necessary, adjust the field definitions to ensure they align with the expected domain.
  
  
  
  Consult Documentation: 
  
  Review any relevant documentation or notes related to the data conversion process you are performing. There may be specific requirements or configurations needed for the tables involved.
  
  
  
  Testing: 
  
  After making changes, test the data conversion process again to see if the error persists.
  
  
  
  Related Information:
  
  Data Dictionary (SE11): This transaction allows you to view and modify the definitions of database tables, data elements, domains, etc.
  Data Migration Tools: Familiarize yourself with the tools and methodologies used for data migration in SAP, such as SAP S/4HANA Migration Cockpit, LSMW, or other ETL tools.
  SAP Notes: Check SAP Notes for any known issues or patches related to the error message. You can search for the error message number or keywords in the SAP Support Portal.
  
  If the issue persists after following these steps, consider reaching out to SAP support or consulting with a technical expert who specializes in SAP data migration.