How To Fix RSDS126 - The field of validity &1 in segment &2 is not of type date (DATS/DATN)

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 126

• Message text: The field of validity &1 in segment &2 is not of type date (DATS/DATN)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDS126 - The field of validity &1 in segment &2 is not of type date (DATS/DATN) ?

  The SAP error message RSDS126 indicates that there is an issue with the data type of a field in a DataSource or InfoSource. Specifically, it states that the field of validity (which is expected to be of type date) is not of the correct data type (DATS or DATN). This error typically occurs in the context of data extraction or transformation processes in SAP BW (Business Warehouse).
  Cause:
  
  Incorrect Data Type: The field that is supposed to represent a date is defined with a different data type (e.g., CHAR, NUMC, etc.) in the underlying database or DataSource.
  DataSource Configuration: The DataSource may be incorrectly configured, leading to a mismatch between the expected data type and the actual data type of the field.
  Field Mapping Issues: If there are custom transformations or mappings, they may not be correctly set up to handle date fields.
  
  Solution:
  
  
  Check DataSource Definition: 
  
  Go to the DataSource in the SAP system and check the field definitions. Ensure that the field of validity is defined as a date type (DATS or DATN).
  
  
  
  Adjust Data Type:
  
  If the field is incorrectly defined, you may need to adjust the data type in the source system or in the DataSource configuration in SAP BW.
  If you have access to the source system, modify the field definition to ensure it is of type DATS or DATN.
  
  
  
  Update Transformations:
  
  If you are using transformations, check the mapping for the field of validity. Ensure that it is correctly mapped to a date type in the target structure.
  
  
  
  Re-activate DataSource:
  
  After making changes, you may need to re-activate the DataSource in SAP BW to ensure that the changes take effect.
  
  
  
  Test the Data Extraction:
  
  After making the necessary adjustments, perform a test extraction to verify that the error has been resolved.
  
  
  
  Related Information:
  
  Data Types in SAP: In SAP, DATS is the standard data type for date fields, while DATN is used for date fields with a specific format. Ensure that you are familiar with these data types when working with DataSources.
  SAP BW Documentation: Refer to SAP BW documentation for more details on DataSource configuration and data type handling.
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message or provide additional guidance.
  
  If the issue persists after following these steps, consider reaching out to your SAP Basis or BW support team for further assistance.