How To Fix DHANA_CDS_MODEL004 - Enable HANA types convertion.

SAP Error Message - Details

• Message type: E = Error

• Message class: DHANA_CDS_MODEL - Message Class for CDS Analyzer Model

• Message number: 004

• Message text: Enable HANA types convertion.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message DHANA_CDS_MODEL004 - Enable HANA types convertion. ?

  The SAP error message DHANA_CDS_MODEL004 typically indicates that there is an issue with the data type conversion in a Core Data Services (CDS) view when using HANA. This error often arises when the CDS view is trying to use data types that are not compatible or cannot be automatically converted by the HANA database.
  Cause:
  
  Incompatible Data Types: The error usually occurs when there are incompatible data types in the CDS view definition. For example, trying to use a string type where a numeric type is expected.
  Missing Type Conversion: The CDS view may require explicit type conversion for certain fields, especially when dealing with different data sources or when combining fields from different tables.
  HANA Database Settings: Sometimes, the settings or configurations of the HANA database may not allow certain type conversions.
  
  Solution:
  
  Check Data Types: Review the data types of the fields in your CDS view. Ensure that they are compatible and that any necessary conversions are explicitly defined.
  Use CAST or CONVERT: If you identify fields that require conversion, you can use the CAST or CONVERT functions in your CDS view to explicitly convert the data types.
  CAST(field AS target_type)
  
  Modify CDS View: If the error is due to a specific field, consider modifying the CDS view to ensure that all fields are compatible. This may involve changing the data type in the underlying table or view.
  Check HANA Version: Ensure that you are using a version of HANA that supports the data types you are working with. Sometimes, upgrading to a newer version can resolve compatibility issues.
  Consult Documentation: Refer to the SAP HANA documentation for specific guidelines on data type compatibility and conversion.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  CDS View Documentation: Review the official SAP documentation on CDS views for best practices and guidelines on defining data types and conversions.
  
  By following these steps, you should be able to resolve the DHANA_CDS_MODEL004 error and ensure that your CDS view functions correctly.