How To Fix BRAIN_DEV001 - Variable &2 cannot be calculated using &1 before aggregation

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN_DEV - BRAIN messages (for use by development)

• Message number: 001

• Message text: Variable &2 cannot be calculated using &1 before aggregation

What causes this issue?

You are trying to replace variable &V2& from either a hierarchy
attribute, the text of characteristic &V1&<(>,<)> or from characteristic
&V1& key. This replacement should be made after aggregation by &V1& (see
Note 1385580). The variable is used in a context though that forces
replacement before aggregation by &V1&. An exception aggregation for
&V1& is specified for example on formula &V3& or a higher-level formula,
or a second variable is used there which also should be replaced from
characteristic &V1& but before aggregation.

System Response

The system cannot resolve this conflict. The query cannot be generated.

How to fix this error?

Change the definition of the variable by defining "replace with the
attribute value 1ATTRKEY" instead of "replace with characteristic key"
(for a detailed explanation<(>,<)> see Note 1385580).
Or change query definition by breaking up formula &V3& into
corresponding sub formulas.
Examples:
Let Va be a formula variable which has to be replaced after aggregation,
Vb another formula variable, and B a keyfigure.
You should then split formula F = B * ( Va -Vb) into F = Fa - Fb with
the sub formulas Fa = B*Va and Fb = B*Vb.
Or you should split formula G = B* Va * Vb into G = Va * Gb with the sub
formula Gb = Vb * B.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN_DEV001 - Variable &2 cannot be calculated using &1 before aggregation ?

  The SAP error message BRAIN_DEV001 indicates that there is an issue with the calculation of a variable in a query or report, specifically that the variable cannot be calculated before the aggregation step. This typically occurs in the context of SAP BW (Business Warehouse) or SAP HANA when working with queries in BEx (Business Explorer) or similar reporting tools.
  
  Cause:
  The error arises when:
  
  Variable Dependency: The variable you are trying to calculate (&2) depends on another variable or characteristic (&1) that has not yet been aggregated. In BW queries, certain calculations can only be performed after the data has been aggregated.
  Query Design: The design of the query may not allow for the calculation of the variable at the point in the execution where it is being called.
  Incorrect Calculation Logic: The logic defined for the variable may not be appropriate for the context in which it is being used.
  
  
  Solution:
  To resolve this error, consider