Message type: E = Error
Message class: BRF - Messages for Business Rule Framework
Message number: 231
Message text: Decision expression &1 cannot be evaluated in RANGE &2
The system cannot calculate the range expression because it is unable to
determine a valid result for a required subexpression.
The system issues an error message and will not allow you to continue with this transaction until the error is resolved.
Check whether there are any error messages for the subexpressions.
Error message extract from SAP system. Copyright SAP SE.