How To Fix DMC_RT_MSG208 - Cannot read data from source system

SAP Error Message - Details

• Message type: E = Error

• Message class: DMC_RT_MSG - DMC: Runtime Object Messages

• Message number: 208

• Message text: Cannot read data from source system

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_MSG208 - Cannot read data from source system ?

  The SAP error message DMC_RT_MSG208: Cannot read data from source system typically occurs in the context of data migration or data replication processes, particularly when using SAP Data Migration Cockpit (DMC) or SAP Landscape Transformation (SLT). This error indicates that the system is unable to retrieve data from the specified source system, which can be due to various reasons.
  Causes:
  
  Connection Issues: There may be network connectivity problems between the source system and the target system.
  Authorization Problems: The user credentials used to access the source system may not have the necessary permissions to read the data.
  Source System Configuration: The source system may not be properly configured to allow data extraction. This could include issues with the data source settings or the data model.
  Data Source Availability: The data source (e.g., a table or view) may not be available or may be locked for maintenance.
  Technical Issues: There could be technical issues such as system downtime, database errors, or other system-related problems.
  Incorrect Source Definition: The source definition in the DMC may be incorrect or not aligned with the actual structure of the source data.
  
  Solutions:
  
  Check Connectivity: Ensure that there is a stable network connection between the source and target systems. You can test the connection using tools like ping or telnet.
  Verify User Permissions: Check the user credentials being used to access the source system. Ensure that the user has the necessary authorizations to read the required data.
  Review Source System Configuration: Ensure that the source system is correctly configured for data extraction. This includes checking the data source settings and ensuring that the data model is correctly defined.
  Check Data Source Availability: Verify that the data source (tables, views) is available and not locked. You can check this in the source system.
  Monitor System Status: Check the status of both the source and target systems for any ongoing issues or maintenance activities that might affect data access.
  Review Logs: Look at the logs in both the source and target systems for any additional error messages or warnings that could provide more context about the issue.
  Correct Source Definition: If the source definition in the DMC is incorrect, update it to match the actual structure of the source data.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Refer to the official SAP documentation for Data Migration Cockpit or SLT for detailed guidance on configuration and troubleshooting.
  Community Forums: Engage with the SAP Community or other forums where SAP professionals discuss similar issues. You may find others who have encountered and resolved the same error.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.