How To Fix FDT_EXPRESSIONS754 - Aggregation column specified without an aggregation operation

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 754

• Message text: Aggregation column specified without an aggregation operation

What causes this issue?

An aggregation column has been defined for the current table, but the
operation type is either undefined or an operation other than
aggregation (for example, sum).

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Correct the definition of the table operation either by setting the
operation type to 'aggregation' or by removing the aggregation column.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS754 - Aggregation column specified without an aggregation operation ?

  The SAP error message FDT_EXPRESSIONS754 indicates that there is an issue with the way an aggregation column is being used in a formula or expression within the SAP system, particularly in the context of SAP Fiori or SAP BW (Business Warehouse) reporting. This error typically arises when an aggregation column is specified without a corresponding aggregation operation, which is necessary for the system to process the data correctly.
  Cause:
  The error occurs due to one of the following reasons:
  
  Missing Aggregation Function: An aggregation column (like SUM, AVG, COUNT, etc.) is referenced in a calculation or expression without applying an aggregation function to it.
  Incorrect Expression Syntax: The syntax used in the expression may not be correct, leading to the system not recognizing how to handle the aggregation.
  Data Model Issues: There may be issues with the underlying data model or the way the data is structured, which could lead to confusion in how aggregations should be applied.
  
  Solution:
  To resolve the FDT_EXPRESSIONS754 error, you can take the following steps:
  
  
  Check the Expression: Review the expression or formula where the error is occurring. Ensure that any aggregation columns are accompanied by an appropriate aggregation function. For example, instead of just referencing a column like SalesAmount, use SUM(SalesAmount).
  
  
  Use Correct Syntax: Ensure that the syntax used in the expression is correct. If you are using a specific formula language (like ABAP or SQL), make sure to follow the correct syntax rules.
  
  
  Review Data Model: Check the data model to ensure that the aggregation columns are correctly defined and that there are no inconsistencies in the data structure.
  
  
  Test with Simple Expressions: If you are unsure where the error is coming from, try simplifying the expression to isolate the problem. Start with a basic aggregation and gradually add complexity until you identify the source of the error.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on using expressions and aggregations correctly in your specific context.
  
  
  Debugging: If you have access to debugging tools, use them to step through the expression evaluation to see where it fails.
  
  
  Related Information:
  
  SAP Notes and Knowledge Base Articles: Check SAP's support portal for any notes or articles related to this specific error message, as they may provide additional context or solutions.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  Training and Documentation: Consider reviewing training materials or documentation related to SAP Fiori, BW, or the specific module you are working with to better understand how to work with expressions and aggregations.
  
  By following these steps, you should be able to identify and resolve the issue causing the FDT_EXPRESSIONS754 error in your SAP environment.