Property name: Answer option unique choice

Property name: Answer option unique choice
Question types applied	Single-Grid
Description	If the respondent chooses an answer option for a sub question, he can't choose this answer option for any remaining sub questions of the question
Business logic	The property is checked when the respondent navigates to the next question. If the rule above is violated, a warning dialog will be shown to force the respondent to select answer options again.
Formatting	True or Range values If value = True: all sub questions in a question have different answer options. If value = Range value: all sub questions in a question don't have the same answer options. The answer option values are specified in this range.
Screen examples	Single grid In the Question properties dialog: when its value = True In the Questionnaire Viewer: - When the respondent selects the answer options for the question and clicks a next button. This choice violates this property rule. A warning dialog will be shown to notify them about this. - When the respondent chooses the answer options which do not violate this property rule, the next question will be shown when they click a next button. In the Question properties dialog: when its value = Range value: In the Questionnaire Viewer: - When the respondent violates this property rule: - The image below shows the situation when this property rule is not violated: