How To Fix DDLS472 - No aggregate function can be added to extend &1

SAP Error Message - Details

• Message type: E = Error

• Message class: DDLS - For DDL source handling

• Message number: 472

• Message text: No aggregate function can be added to extend &1

What causes this issue?

No aggregate function can be added to the view extend ?&V1&?.

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?

The enhanced view "&V2&" must either contain an aggregate function
already or a GROUP BY clause must be added to it.

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 DDLS472 - No aggregate function can be added to extend &1 ?

  The SAP error message DDLS472, which states "No aggregate function can be added to extend &1," typically occurs in the context of database table definitions or when working with views in the ABAP Dictionary. This error indicates that there is an issue with trying to add an aggregate function to a database object that does not support it.
  Cause:
  
  
  Inappropriate Use of Aggregate Functions: The error usually arises when you attempt to add an aggregate function (like SUM, AVG, COUNT, etc.) to a database object that is not designed to handle such functions. This can happen when extending a view or a table that does not support aggregation.
  
  
  View Type: If you are working with a database view, ensure that the view type (e.g., database view, projection view) supports the use of aggregate functions. Some views are designed for simple data retrieval and do not allow for aggregation.
  
  
  Incorrect Definition: The definition of the database object may not be compatible with the intended use of aggregate functions. For example, if the object is defined in a way that does not allow for grouping or aggregation.
  
  
  Solution:
  
  
  Review the Object Definition: Check the definition of the database object (table or view) you are trying to extend. Ensure that it is appropriate for the use of aggregate functions.
  
  
  Change View Type: If you are working with a view, consider changing it to a type that supports aggregate functions, such as a database view that allows for grouping.
  
  
  Modify the Query: If you are writing a query that includes aggregate functions, ensure that you are using the correct syntax and that the underlying tables or views support the operations you are trying to perform.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for guidance on the specific object you are working with. This can provide insights into the limitations and capabilities of the object.
  
  
  Check for Updates: Ensure that your SAP system is up to date, as there may be patches or updates that address issues related to database object definitions.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to the DDLS472 error.
  ABAP Dictionary: Familiarize yourself with the ABAP Dictionary and how it handles database objects, including tables and views.
  SQL Syntax: Review SQL syntax for aggregate functions to ensure that you are using them correctly in your queries.
  
  If the problem persists after trying the above solutions, consider reaching out to your SAP support team or consulting with an SAP expert for further assistance.