How To Fix CNV_CMIS_A_20_FUNC045 - Cannot read data from the target 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: 045

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

What causes this issue?

The program was unable to read data from the target 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_FUNC045 - Cannot read data from the target system; see long text ?

  The SAP error message CNV_CMIS_A_20_FUNC045 indicates that there is an issue with reading data from the target 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:
  
  Connection Issues: There may be a problem with the network connection between the source and target systems.
  Authorization Problems: The user or service account may not have the necessary permissions to read data from the target system.
  Configuration Errors: Incorrect configuration settings in the migration tool or in the target system can lead to this error.
  Data Format Issues: The data in the target system may not be in the expected format, causing the read operation to fail.
  System Performance: The target system may be experiencing performance issues, leading to timeouts or failures in data retrieval.
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Check Connection: Verify that the connection between the source and target systems is active and stable. Test the network connectivity and ensure that there are no firewall or routing issues.
  
  
  Review Authorizations: Ensure that the user or service account used for the migration has the necessary authorizations to access the target system. Check roles and permissions in both the source and target systems.
  
  
  Validate Configuration: Review the configuration settings in the migration tool. Ensure that all parameters are set correctly and that the target system is properly configured to accept data.
  
  
  Examine Data Formats: Check the data in the target system for any inconsistencies or format issues. Ensure that the data types and structures match what the migration tool expects.
  
  
  Monitor System Performance: Check the performance of the target system. If it is under heavy load, consider running the migration during off-peak hours or optimizing the system performance.
  
  
  Review Logs: Look at the detailed logs provided by the migration tool for more specific error messages or warnings that can give further insight into the issue.
  
  
  Consult Documentation: Refer to the official SAP documentation for the migration tool you are using. There may be specific troubleshooting steps or known issues related to this error.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any logs and the context in which it occurred.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit or the specific tool you are using for data migration.
  Community Forums: Engage with the SAP Community or other forums where users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify and resolve the underlying cause of the CNV_CMIS_A_20_FUNC045 error.