How To Fix RSDS178 - DataSource &1(&2): Data type &3 not supported by object type &4

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 178

• Message text: DataSource &1(&2): Data type &3 not supported by object type &4

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 RSDS178 - DataSource &1(&2): Data type &3 not supported by object type &4 ?

  The SAP error message RSDS178 indicates that there is an issue with the data type of a DataSource in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence). The message typically means that the data type specified for a field in the DataSource is not compatible with the object type that is being used.
  Cause:
  The error can occur due to several reasons:
  
  Incompatible Data Types: The data type defined in the DataSource does not match the expected data type for the target object (e.g., InfoObject, InfoProvider).
  Incorrect Mapping: There may be a mismatch in the mapping of fields between the DataSource and the target object.
  Unsupported Data Types: The DataSource may be using a data type that is not supported by the target object type in SAP BW/BI.
  Changes in DataSource: If the DataSource was modified (e.g., fields added or changed), it may lead to inconsistencies with the target object.
  
  Solution:
  To resolve the RSDS178 error, you can follow these steps:
  
  
  Check DataSource Definition:
  
  Go to the DataSource definition in the SAP BW/BI system.
  Verify the data types of the fields in the DataSource and ensure they are compatible with the target object.
  
  
  
  Review Target Object:
  
  Check the InfoObject or InfoProvider that the DataSource is mapped to.
  Ensure that the data types of the fields in the target object match those in the DataSource.
  
  
  
  Adjust Field Mapping:
  
  If there are discrepancies, adjust the field mapping in the DataSource or the target object to ensure compatibility.
  
  
  
  Re-activate Objects:
  
  After making changes, re-activate the DataSource and the target object to ensure that the changes take effect.
  
  
  
  Check for Unsupported Data Types:
  
  Refer to SAP documentation to confirm that the data types used in the DataSource are supported by the target object type.
  
  
  
  Test Data Load:
  
  After making the necessary adjustments, perform a test data load to ensure that the error is resolved.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to RSDS178 for any specific patches or updates that may address this issue.
  Documentation: Review SAP BW/BI documentation for guidelines on DataSource and InfoObject compatibility.
  Transaction Codes: Use transaction codes like RSA1 (Data Warehousing Workbench) to access DataSources and InfoProviders for troubleshooting.
  
  By following these steps, you should be able to identify and resolve the cause of the RSDS178 error in your SAP BW/BI environment.