How To Fix RSM207 - Data class & is unknown

SAP Error Message - Details

• Message type: E = Error

• Message class: RSM -

• Message number: 207

• Message text: Data class & is unknown

What causes this issue?

Data type &V1& is not known. The following data types can be requested:
D -> Transaction data
M -> Master data (attributes)
T -> Texts
H -> Hierarchies

System Response

How to fix this error?

Change your data type to a valid one.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSM207 - Data class & is unknown ?

  The SAP error message RSM207, 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, or when trying to activate a data dictionary object.
  Cause:
  
  Incorrect Data Class Specification: The data class specified for the table or object does not exist or is misspelled.
  Missing Data Class Definition: The data class has not been defined in the system.
  Transport Issues: If the data class was recently transported from another system, it may not have been included or properly configured.
  Custom Development: If you are working with custom tables or objects, the data class may not be recognized if it was not properly created or registered.
  
  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 Data Dictionary (transaction SE11) 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 can be done in transaction SE11 by defining a new data class.
  
  
  Review Transport Requests: If the issue arose after a transport, check the transport request to ensure that all necessary objects, including the data class, were included and correctly imported.
  
  
  Check Custom Development: If you are working with custom tables, ensure that the data class is properly defined in the development environment and that it is consistent across different environments (development, quality assurance, production).
  
  
  Consult Documentation: Refer to SAP documentation or help resources for more information on data classes and their usage.
  
  
  Related Information:
  
  Data Classes in SAP: Data classes are used to categorize database tables based on their usage and storage characteristics. Common data classes include:
  
  APPL0: Master data
  APPL1: Transaction data
  APPL2: Organizational data
  APPL3: Custom data
  
  
  Transaction Codes: 
  
  SE11: Data Dictionary
  SE14: Database Utility (for checking and adjusting database objects)
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  
  If the problem persists after following these steps, consider reaching out to your SAP Basis or development team for further assistance.