How To Fix RSDHA400 - SQL-type '&1' not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDHA - HANA Analysis in BW

• Message number: 400

• Message text: SQL-type '&1' not supported

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDHA400 - SQL-type '&1' not supported ?

  The SAP error message RSDHA400, which states "SQL-type '&1' not supported," typically occurs in the context of SAP BW (Business Warehouse) when there is an issue with the data type of a field in a query or InfoProvider. This error indicates that the SQL type being used is not recognized or supported by the system.
  Causes:
  
  Unsupported Data Type: The field in question may have a data type that is not compatible with the SQL operations being performed. This can happen if the data type is custom or not standard.
  Data Source Issues: If the data source (like an InfoCube, DSO, or other InfoProviders) has been modified or has incompatible data types, it can lead to this error.
  Query Design: The query might be designed in a way that it tries to use a data type that is not supported by the underlying database or the BW system.
  Database Compatibility: The database being used may not support certain SQL types that are being referenced in the BW query.
  
  Solutions:
  
  Check Data Types: Review the data types of the fields in the InfoProvider and ensure they are compatible with the SQL operations being performed. You may need to change the data type in the underlying data source.
  Modify Query: If the query is trying to use unsupported data types, consider modifying the query to use compatible fields or data types.
  Update InfoProvider: If the InfoProvider has been modified, ensure that all changes are consistent and that the data types are correctly defined.
  Database Configuration: Ensure that the database is properly configured and that it supports the data types being used in the BW system.
  SAP Notes: Check for any relevant SAP Notes or patches that may address this issue. Sometimes, specific versions of SAP BW or the underlying database may have known issues that are resolved in later updates.
  
  Related Information:
  
  SAP BW Documentation: Review the official SAP BW documentation for information on supported data types and best practices for designing queries.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) to analyze InfoProviders and queries for potential issues.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or BW team for further investigation and support.