How To Fix RSDS_ACCESS033 - Unknown ABAP type &1; cannot be converted to DD type

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS_ACCESS - Access Messages

• Message number: 033

• Message text: Unknown ABAP type &1; cannot be converted to DD type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDS_ACCESS033 - Unknown ABAP type &1; cannot be converted to DD type ?

  The SAP error message RSDS_ACCESS033 indicates that there is an issue with the data type being used in a DataSource or a transformation. Specifically, it states that an "Unknown ABAP type" cannot be converted to a Data Dictionary (DD) type. This typically occurs in the context of data extraction or transformation processes in SAP BW (Business Warehouse) or when working with DataSources.
  Cause:
  
  Unsupported Data Type: The ABAP type being used in the DataSource or transformation is not recognized or supported by the Data Dictionary. This can happen if a custom data type is used that does not have a corresponding DD type.
  Changes in Data Model: If there have been recent changes to the underlying data model (e.g., changes in the database table structure or data types), it may lead to this error.
  Inconsistent Metadata: There may be inconsistencies between the metadata definitions in the DataSource and the actual data types in the underlying database.
  
  Solution:
  
  Check Data Types: Review the ABAP data types used in the DataSource or transformation. Ensure that they are compatible with the Data Dictionary types. You may need to adjust the data types in the ABAP code or the DataSource definition.
  Update DataSource: If the DataSource is based on a table or view that has changed, you may need to refresh or regenerate the DataSource. This can be done by:
  
  Going to the DataSource in the SAP BW system.
  Selecting the option to "Replicate" or "Update" the DataSource.
  
  
  Check for Custom Types: If you are using custom ABAP types, ensure that they are properly defined in the Data Dictionary. You may need to create a corresponding DD type for the custom ABAP type.
  Review Transformation Logic: If the error occurs during a transformation, review the transformation logic to ensure that all fields are correctly mapped and that the data types are compatible.
  Debugging: If the issue persists, consider debugging the ABAP code or the DataSource to identify where the unknown type is being referenced.
  
  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.
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) to manage DataSources and transformations, and SE11 (Data Dictionary) to check data types.
  Documentation: Refer to SAP documentation for guidelines on creating and managing DataSources and transformations, especially regarding data types and compatibility.
  
  By following these steps, you should be able to identify and resolve the issue causing the RSDS_ACCESS033 error in your SAP environment.