How To Fix RSM209 - Data class & is unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: RSM -

• Message number: 209

• Message text: Data class & is unknown

What causes this issue?

InfoSource &V1& does not have any fields. Therefore, no &V2& can be
generated either.

System Response

The requested function was terminated.

How to fix this error?

Get the meta data description for this InfoSource from a source system.
If you are dealing with external data, maintain the meta data for this
InfoSource.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSM209 - Data class & is unknown ?

  The SAP error message RSM209, which states "Data class & is unknown," typically occurs when there is an issue with the data class specified for a database table or an object in the SAP system. This error can arise during various operations, such as when creating or modifying database tables.
  Cause:
  
  Incorrect Data Class Specification: The data class specified for the table does not exist or is misspelled.
  Missing Data Class Definition: The data class may not have been defined in the system.
  Transport Issues: If the table was transported from another system, the data class may not have been included or may not exist in the target system.
  Configuration Issues: There may be configuration issues in the SAP system that prevent the recognition of the data class.
  
  Solution:
  
  
  Check Data Class: Verify the data class specified in the table definition. Ensure that it is correctly spelled and exists in the system.
  
  You can check the available data classes in the SAP system by navigating to the transaction code SE11 (Data Dictionary) and looking for the data class definitions.
  
  
  
  Define Missing Data Class: If the data class does not exist, you may need to create it. This typically requires administrative privileges and should be done with caution.
  
  Use transaction code SE11 to create or modify data classes.
  
  
  
  Review Transport Requests: If the issue arose after a transport, check the transport request to ensure that all necessary objects, including data classes, were included.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on data classes and their usage.
  
  
  Check System Configuration: Ensure that the system configuration is correct and that there are no underlying issues affecting the data dictionary.
  
  
  Contact SAP Support: If the issue persists and you cannot resolve it, consider reaching out to SAP support for further assistance.
  
  
  Related Information:
  
  
  Data Classes in SAP: Data classes are used to categorize database tables based on their usage and storage requirements. Common data classes include:
  
  Master Data: For tables that store master data.
  Transaction Data: For tables that store transactional data.
  Organization Data: For tables that store organizational data.
  
  
  
  Transaction Codes:
  
  SE11: Data Dictionary - to view and manage data classes and tables.
  SE14: Database Utility - to check and adjust database objects.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to data classes and the RSM209 error.
  
  
  By following these steps, you should be able to identify and resolve the cause of the RSM209 error in your SAP system.