How To Fix EM021 - Comparison with data dictionary showed no difference

SAP Error Message - Details

• Message type: E = Error

• Message class: EM - IS-U Migration

• Message number: 021

• Message text: Comparison with data dictionary showed no difference

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message EM021 - Comparison with data dictionary showed no difference ?

  The SAP error message EM021 ("Comparison with data dictionary showed no difference") typically occurs during the process of comparing the structure of a database table or a data element with the corresponding definitions in the data dictionary. This message indicates that there are no discrepancies between the database table and the data dictionary definition, meaning that the two are in sync.
  Cause:
  
  No Changes Made: The most common cause of this message is that no changes have been made to the database table or the data dictionary object since the last comparison.
  Successful Synchronization: It may also indicate that a previous synchronization process was successful, and the current state is consistent with the data dictionary.
  Incorrect Comparison: Sometimes, the comparison might be initiated incorrectly, leading to this message even if changes were expected.
  
  Solution:
  
  Verify Changes: If you expected changes to be detected, double-check that the changes were actually made to the database table or data dictionary object.
  Recheck the Comparison: Ensure that you are comparing the correct objects. Sometimes, the wrong table or data element might be selected for comparison.
  Check Transport Requests: If changes were made in a development environment and not yet transported to the target environment, ensure that the transport requests are correctly released and imported.
  Review Logs: Check the logs for any additional messages or warnings that might provide more context about the comparison process.
  Consult Documentation: Refer to SAP documentation or notes related to the specific version you are using for any known issues or additional troubleshooting steps.
  
  Related Information:
  
  Transaction Codes: You can use transaction codes like SE11 (Data Dictionary) or SE14 (Database Utility) to manage and compare database objects.
  SAP Notes: Look for relevant SAP Notes in the SAP Support Portal that might address specific issues related to this error message.
  Support Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  
  In summary, the EM021 message indicates that there are no differences found during the comparison process, which is generally a positive outcome. If you are expecting changes, ensure that they have been correctly implemented and that you are comparing the right objects.