We have a check box question followed by Constant Sum Question.
Options selected in Checkbox goes into Constant Sum question.
Earlier, sum of options was supposed to be 100 so we programmed this question as CS. Later client asked to allow sum as less than or more than 100. We edited the setting and allowed below 99 and above 99999 from advanced setting of CS.
Now, if we select just 1 option in select type, Constant sum gets skipped and codes 100 for selected option. However, if would have shown, respondent could have entered anything from 0 to 99999.
We would have programmed this question as grid but this change came during live mode so was not eager to change question type.
We can think of some tricks to show single option but feel that we should have option in software to turn autocoding on and off.