How To Fix ESH_QP_MSG029 - Symbol &1 does not occur as production left-hand side

SAP Error Message - Details

• Message type: E = Error

• Message class: ESH_QP_MSG - Query Parser Messages

• Message number: 029

• Message text: Symbol &1 does not occur as production left-hand side

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message ESH_QP_MSG029 - Symbol &1 does not occur as production left-hand side ?

  The SAP error message ESH_QP_MSG029 indicates that there is an issue with a symbol in a query or a data model, specifically that the symbol (represented by &1) does not occur on the left-hand side of a production rule. This error is typically encountered in the context of SAP's Enterprise Search or Query Processing.
  Cause:
  
  Incorrect Query Definition: The symbol referenced in the error message is not defined correctly in the query or does not exist in the expected context.
  Model Configuration Issues: There may be a misconfiguration in the data model or query model where the symbol is expected to be present but is not.
  Data Source Issues: The data source may not contain the expected fields or attributes that correspond to the symbol.
  Syntax Errors: There could be syntax errors in the query definition that prevent the system from recognizing the symbol correctly.
  
  Solution:
  
  Check Query Definition: Review the query definition to ensure that the symbol is correctly defined and is present in the left-hand side of the production rule.
  Validate Data Model: Ensure that the data model is correctly configured and that all necessary fields are included. You may need to adjust the model to include the missing symbol.
  Review Data Sources: Verify that the data sources being used in the query contain the expected attributes. If the symbol is supposed to map to a field in the data source, ensure that it exists.
  Correct Syntax Errors: Look for any syntax errors in the query definition that might be causing the issue. Correct any mistakes and re-test the query.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the specific query or data model you are working with.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  Debugging Tools: Use SAP debugging tools to trace the execution of the query and identify where the error is occurring.
  Training and Documentation: Ensure that you have access to training materials or documentation related to query processing and data modeling in SAP.
  
  If the issue persists after trying the above solutions, consider reaching out to SAP support for further assistance.