How To Fix CNV_CMIS_A_20_FUNC044 - Cannot read data from the source system; see long text

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_CMIS_A_20_FUNC - Message texts for CNV_CMIS_A_20 function modules

• Message number: 044

• Message text: Cannot read data from the source system; see long text

What causes this issue?

The program was unable to read data from the source system.

System Response

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

How to fix this error?

Contact your system administrator. When the problem is resolved,
execute the activity again.

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_CMIS_A_20_FUNC044 - Cannot read data from the source system; see long text ?

  The SAP error message CNV_CMIS_A_20_FUNC044 indicates that there is an issue with reading data from the source system during a data migration or conversion process. This error is typically encountered in the context of SAP's data migration tools, such as the SAP S/4HANA Migration Cockpit or other data conversion scenarios.
  Cause:
  The error can be caused by several factors, including:
  
  
  Connectivity Issues: There may be a problem with the connection between the SAP system and the source system, such as network issues or incorrect configuration settings.
  
  
  Authorization Problems: The user or service account being used to access the source system may not have the necessary permissions to read the required data.
  
  
  Data Source Configuration: The configuration settings for the data source may be incorrect, leading to an inability to access the data.
  
  
  Data Format Issues: The data in the source system may not be in the expected format, causing the read operation to fail.
  
  
  Technical Issues: There may be underlying technical issues in the source system, such as database locks, corruption, or other errors.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Connectivity: Ensure that the connection between the SAP system and the source system is active and properly configured. Test the connection to confirm it is working.
  
  
  Review Authorizations: Verify that the user or service account has the necessary authorizations to access the data in the source system. Adjust permissions as needed.
  
  
  Validate Configuration: Review the configuration settings for the data source in the SAP system. Ensure that all parameters are correctly set up.
  
  
  Inspect Data Format: Check the data in the source system to ensure it is in the expected format. Look for any anomalies or inconsistencies that could cause read failures.
  
  
  Check Source System Health: Investigate the source system for any technical issues, such as database locks or errors. Resolve any underlying problems that may be affecting data access.
  
  
  Review Logs: Check the logs in both the SAP system and the source system for any additional error messages or warnings that could provide more context about the issue.
  
  
  Consult Documentation: Refer to SAP documentation or support notes related to the specific migration or conversion process you are using for any additional troubleshooting steps.
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide additional troubleshooting guidance.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the CNV_CMIS_A_20_FUNC044 error.