How To Fix RSBBS406 - Field type &1 is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: RSBBS - BW: Reports-Reports-Interface

• Message number: 406

• Message text: Field type &1 is not allowed

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSBBS406 - Field type &1 is not allowed ?

  The SAP error message RSBBS406 ("Field type &1 is not allowed") typically occurs in the context of SAP Business Warehouse (BW) when there is an issue with the data source or the data model configuration. This error indicates that a field type being used in a data source or transformation is not compatible with the expected field types in the target structure.
  Cause:
  
  
  Incompatible Field Types: The field type specified in the error message (represented by &1) is not allowed in the context where it is being used. This can happen if:
  
  The field type is not supported by the target InfoObject or InfoProvider.
  There is a mismatch between the data types in the source and target structures.
  
  
  
  Incorrect Data Source Configuration: The data source may be incorrectly configured, leading to the use of unsupported field types.
  
  
  Transformation Issues: If you are using transformations to map fields from a source to a target, the mapping may include fields that are not compatible.
  
  
  Solution:
  
  
  Check Field Types: Review the field types in both the source and target structures. Ensure that the field types in the source data source are compatible with the target InfoObject or InfoProvider.
  
  
  Modify Data Source: If the field type is not supported, consider modifying the data source to use a compatible field type. This may involve changing the data type in the source system or adjusting the data extraction logic.
  
  
  Adjust Transformations: If the error occurs during a transformation, check the mapping of fields. Ensure that all fields being mapped are of compatible types. You may need to adjust the transformation rules to exclude or convert incompatible fields.
  
  
  Data Type Conversion: If necessary, implement data type conversion logic in the transformation to convert the field to a compatible type.
  
  
  Consult Documentation: Refer to SAP documentation for specific details on supported field types for the relevant InfoObjects and InfoProviders.
  
  
  Testing: After making changes, test the data extraction or transformation process to ensure that the error is resolved.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  BW Modeling Tools: Utilize BW modeling tools to analyze and validate the data model and transformations.
  
  By following these steps, you should be able to identify the cause of the RSBBS406 error and implement a solution to resolve it.