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The result type of expression &1 must be Boolean

Message type: E = Error

Message class: BRF - Messages for Business Rule Framework

Message number: 446

Message text: The result type of expression &1 must be Boolean



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?

If the rule line contains an action, the result type of the expression
must be Boolean.
The result of the expression decides whether the action is executed or
not.


Procedure for System Administrators


Error message extract from SAP system. Copyright SAP SE.