How To Fix BRAIN204 - &1 cannot be input-ready. &2 has ref. characteristic for exception &3.

BRAIN204 - Overview

• Message type: E = Error

• Message class: BRAIN -

• Message number: 204

• Message text: &1 cannot be input-ready. &2 has ref. characteristic for exception &3.

What causes this issue?

The basic key figure &V2& of this selection element (&V1&) has an
exception aggregation. Reference characteristic &V3& is not in the
aggregation level however, or is not assigned in the union provider.

System Response

The input-readiness of &V1& is revoked.

How to fix this error?

Check the query definition.

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.

BRAIN204 - Details

• The SAP error message BRAIN204 indicates that a certain characteristic in a planning application is not input-ready due to a reference characteristic being defined for an exception. This typically occurs in the context of SAP BW (Business Warehouse) or SAP Integrated Business Planning (IBP) when working with planning functions or planning models.
  
  Cause:
  
  Reference Characteristic: The error suggests that the characteristic you are trying to make input-ready has a reference characteristic that is defined for an exception. This means that the system is unable to allow input for this characteristic because it is linked to a specific exception scenario.
  Planning Model Configuration: The planning model or the planning function may not be configured correctly, leading to this restriction.
  Data Locking: There might be data locking issues or the planning area might be in a state that does not allow input.
  
  
  Solution:
  
  Check Configuration: Review the configuration of the planning model and the characteristics involved. Ensure that