How To Fix LTR2_CHANGELOG162 - Filter field data type &1 changed

SAP Error Message - Details

• Message type: E = Error

• Message class: LTR2_CHANGELOG -

• Message number: 162

• Message text: Filter field data type &1 changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LTR2_CHANGELOG162 - Filter field data type &1 changed ?

  The SAP error message LTR2_CHANGELOG162 indicates that there is a mismatch in the data type of a filter field in the change log for a DataSource. This typically occurs when the data type of a field in the source system has been changed after the DataSource was created or modified. 
  Cause:
  
  Data Type Change: The most common cause is that the data type of a field in the underlying database table has been altered (e.g., from CHAR to NUMC, or changing the length of a field).
  DataSource Modification: Changes made to the DataSource definition in SAP BW or changes in the source system that affect the DataSource.
  Inconsistent Metadata: The metadata in the BW system is not in sync with the source system due to changes in the source.
  
  Solution:
  To resolve this error, you can follow these steps:
  
  
  Check Data Source Definition:
  
  Go to the DataSource in the SAP BW system and check the field definitions. Compare them with the source system to identify any discrepancies in data types.
  
  
  
  Adjust Data Types:
  
  If you find that the data type has changed in the source system, you may need to adjust the DataSource definition in BW to match the new data type.
  
  
  
  Recreate the DataSource:
  
  In some cases, it may be easier to delete the existing DataSource and recreate it. This ensures that the DataSource is aligned with the current structure of the source system.
  
  
  
  Activate the DataSource:
  
  After making changes, ensure that you activate the DataSource in the BW system.
  
  
  
  Check for Other Dependencies:
  
  If the DataSource is used in any InfoObjects, InfoCubes, or other BW objects, check if those objects need to be adjusted or reactivated as well.
  
  
  
  Transport Changes:
  
  If you are working in a development environment, ensure that any changes are transported to the production environment properly.
  
  
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like RSA1 (Data Warehousing Workbench) to manage DataSources and check their definitions.
  Change Log: The change log can be checked to see what changes have been made to the DataSource or the underlying table.
  SAP Notes: Check for any relevant SAP Notes that may provide additional guidance or fixes related to this error message.
  
  By following these steps, you should be able to resolve the error and ensure that your DataSource is functioning correctly with the updated data types.