How To Fix FQM451 - Field "&1" is unknown (query ID = "&2").

SAP Error Message - Details

• Message type: E = Error

• Message class: FQM - Financial Quantity Management Message Class

• Message number: 451

• Message text: Field "&1" is unknown (query ID = "&2").

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 FQM451 - Field "&1" is unknown (query ID = "&2"). ?

  The SAP error message FQM451, which states "Field '&1' is unknown (query ID = '&2')", typically occurs in the context of SAP Query or SAP Query-related transactions. This error indicates that the system cannot recognize a field that is being referenced in a query. Here’s a breakdown of the potential causes, solutions, and related information:
  Causes:
  
  Field Name Typo: The field name specified in the query may have been misspelled or incorrectly referenced.
  Field Deletion: The field may have been deleted or is no longer available in the underlying database table or structure.
  Changes in Data Model: Changes in the data model (e.g., changes in the database structure or table definitions) may have rendered the field obsolete.
  Authorization Issues: The user may not have the necessary authorizations to access the field.
  Query Configuration: The query may not be properly configured to include the field in question.
  
  Solutions:
  
  Check Field Name: Verify the spelling and syntax of the field name in the query. Ensure that it matches the field names in the underlying database table.
  Review Data Model: Check if the field has been removed or renamed in the database. You can do this by looking at the relevant table structure in the Data Dictionary (transaction SE11).
  Update Query: If the field has been changed or removed, update the query to reflect the current data model. You may need to add a different field or modify the query logic.
  Check Authorizations: Ensure that the user executing the query has the necessary authorizations to access the field. This can be checked in transaction SU53 or by reviewing user roles and authorizations.
  Recreate Query: If the query is significantly outdated or corrupted, consider recreating it from scratch to ensure it aligns with the current data model.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like SQ01 (SAP Query), SQ02 (InfoSet), and SQ03 (User Groups) to manage queries and info sets.
  SAP Notes: Check SAP Notes for any known issues or patches related to the specific query or field in question.
  Documentation: Refer to SAP documentation for guidance on creating and managing queries, especially if you are new to using SAP Query.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or technical team for further investigation.