How To Fix GB029 - Different number of 'GROUP BY' fields

SAP Error Message - Details

• Message type: E = Error

• Message class: GB - Messages used by the Boolean code generator

• Message number: 029

• Message text: Different number of 'GROUP BY' fields

What causes this issue?

The number of 'GROUP BY' fields on the left-hand and right-hand side of
the mathematical formula must be the same. You have tried to create a
formula where this is not the case.

How can this happen?

SUM($dmbtr) GROUP BY $gjahr $f1 > SUM($dmbtr) GROUP BY $vers
-> SUM($dmbtr) GROUP BY $gjahr $f1 > SUM($dmbtr) GROUP BY $gjahr $f1

How can this happen?

SUM( $dmbtr ) GROUP BY $gjahr > SUM( $dmbtr )
-> SUM( $dmbtr ) GROUP BY $gjahr > SUM( $dmbtr ) GROUP BY $gjahr

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 mathematical formula.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GB029 - Different number of 'GROUP BY' fields ?

  The SAP error message GB029, which states "Different number of 'GROUP BY' fields," typically occurs in the context of ABAP programming or when executing SQL queries in SAP systems. This error indicates that there is a mismatch in the number of fields specified in the SELECT statement and those specified in the GROUP BY clause.
  Cause:
  The error arises when:
  
  The SELECT statement includes fields that are not included in the GROUP BY clause.
  The number of fields in the SELECT list does not match the number of fields in the GROUP BY clause, which is required for aggregate functions to work correctly.
  
  Solution:
  To resolve the GB029 error, you should ensure that:
  
  All non-aggregated fields in the SELECT statement are included in the GROUP BY clause.
  If you are using aggregate functions (like SUM, COUNT, AVG, etc.), make sure that only the fields that are being aggregated are excluded from the GROUP BY clause.
  
  Example:
  If you have a query like this:
  SELECT field1, field2, SUM(field3)
  FROM your_table
  GROUP BY field1
  This will trigger the GB029 error because field2 is not included in the GROUP BY clause. To fix it, you can modify the query as follows:
  SELECT field1, field2, SUM(field3)
  FROM your_table
  GROUP BY field1, field2
  Related Information:
  
  Aggregate Functions: Understand how aggregate functions work in SQL and how they interact with GROUP BY.
  SQL Syntax: Familiarize yourself with SQL syntax rules regarding SELECT and GROUP BY clauses.
  Debugging: If you encounter this error in a complex query, consider breaking it down into smaller parts to identify the mismatch more easily.
  Documentation: Refer to SAP documentation or ABAP programming guidelines for best practices on writing SQL queries.
  
  By ensuring that your SELECT and GROUP BY clauses are properly aligned, you can avoid the GB029 error and successfully execute your queries.