How To Fix FKKBIX651 - BRFplus: result data object of the function is not of Boolean type

FKKBIX651 - Overview

• Message type: E = Error

• Message class: FKKBIX - Conv.Inv.: Billing (Invoice Preprocessing)

• Message number: 651

• Message text: BRFplus: result data object of the function is not of Boolean type

What causes this issue?

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

System Response

How to fix this error?

See the documentation about <DS:DE.DISC_FDT_FUNCTION_NAME_KK>BRFplus
functions</>.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

FKKBIX651 - Details

• The SAP error message FKKBIX651 indicates that there is an issue with a BRFplus (Business Rule Framework plus) function where the result data object is expected to be of Boolean type (true/false), but it is not. This error typically arises when the function is designed to return a Boolean value, but the actual data type of the result is different (e.g., it could be a string, integer, or another type).
  
  Cause:
  
  Incorrect Data Type Definition: The result data object in the BRFplus function is defined with a data type that is not Boolean.
  Function Logic: The logic within the function may be returning a value that is not Boolean, such as a string or numeric value.
  Mapping Issues: If the function is being called from another context or application, there may be a mismatch in how the result is being interpreted or mapped.
  
  
  Solution:
  
  
  Check Data Object Definition:
  
  Go to the BRFplus workbench and locate the function