How To Fix RJ405 - The field &1 in extract structure &2 can be in lowercase

RJ405 - Overview

• Message type: E = Error

• Message class: RJ - BW Extractor Handling Message Class

• Message number: 405

• Message text: The field &1 in extract structure &2 can be in lowercase

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RJ405 - The field &1 in extract structure &2 can be in lowercase ?

  The SAP error message RJ405 indicates that there is an issue with the data extraction process, specifically related to the field names in the extract structure. The message states that the field specified (represented by &1) in the extract structure (represented by &2) can only be in lowercase. This typically occurs in the context of SAP BW (Business Warehouse) or data extraction processes where field names are expected to follow certain naming conventions.
  
  Cause:
  
  Field Naming Convention: In SAP BW, field names in extract structures must adhere to specific naming conventions, which often require them to be in lowercase. If a field name is defined in uppercase or mixed case, it can trigger this error.
  Data Source Configuration: The error may arise from the configuration of the data source or the extraction structure where the field names are not correctly defined.
  Inconsistent Naming: If the field names in the source system do not match