How To Fix DMC_RT_MSG020 - This entry does not match the key in the check table

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 020

• Message text: This entry does not match the key in the check table

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 DMC_RT_MSG020 - This entry does not match the key in the check table ?

  The SAP error message DMC_RT_MSG020 ("This entry does not match the key in the check table") typically occurs in the context of data management and data migration processes, particularly when working with the Data Migration Cockpit (DMC) or similar tools. This error indicates that there is a mismatch between the data being processed and the expected values in the check table defined in the system.
  Cause:
  
  
  Data Integrity Issues: The data being imported or processed does not conform to the constraints defined in the check table. This could be due to:
  
  Incorrect or missing foreign key values.
  Data that does not exist in the reference table.
  Typographical errors in the data being uploaded.
  
  
  
  Configuration Issues: The check table may not be correctly configured, or the data model may have changed, leading to discrepancies.
  
  
  Data Format Issues: The format of the data being uploaded may not match the expected format in the check table (e.g., data types, length).
  
  
  Solution:
  
  
  Verify Data: Check the data being uploaded to ensure that all entries match the expected values in the check table. This includes:
  
  Ensuring that all foreign key references exist in the corresponding tables.
  Correcting any typographical errors in the data.
  
  
  
  Check Table Configuration: Review the configuration of the check table to ensure it is set up correctly. This may involve:
  
  Checking the definition of the check table in the Data Dictionary (SE11).
  Ensuring that the relevant fields are correctly defined and that the relationships between tables are intact.
  
  
  
  Data Mapping: If you are using a data migration tool, ensure that the mapping of fields from the source to the target is correct. This includes:
  
  Ensuring that the source data aligns with the target structure and constraints.
  
  
  
  Testing: Before performing a full data load, conduct a test with a smaller subset of data to identify any potential issues.
  
  
  Consult Documentation: Refer to SAP documentation or notes related to the specific data migration process you are using, as there may be specific guidelines or known issues.
  
  
  Related Information:
  
  Transaction Codes: You may want to use transaction codes like SE11 (Data Dictionary) to check the structure of the check table and SE16 (Data Browser) to view the data in the check table.
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Community Forums: Consider checking SAP Community forums or other user groups for similar issues and solutions shared by other users.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.