Making a constraint in a select multiple question that does not allow to enter 2 options form a list of choices

[Kal_Lam]

Welcome back to the community, @sylvestresilasiloga! Maybe this post discussed previously should solve your issue:

How to add multiple constraints (none and declined to answer) for multiple choice question

You could do the same as outlined in the image below: In the survey tab of your xlsform: [Image 1] In the choices tab of your xlsform: [Image 2] Data entry screen as seen in Enketo: (when a condition is met) [Image 3] Data entry screen as seen in Enketo: (when a condition is not met) [Image 4] Data entry screen as seen in Enketo: (when a condition is not met) [Image 5] Data entry screen as seen in Enketo: (when a condition is not met) [Image 6] Data entry screen as seen in Enketo…

And this one too:

How to set a constraint (validation) while selecting a response from a Multiple Choice Question

Hi @anamikadutt, Would you mind trying out as outlined in the image below to control your none of the above response in a multiple choice question: In the survey tab of your xlsform: [Image 1] In the choices tab of your xlsform: [Image 2] Data entry screen as seen in Enketo: When entered correctly [Image 1] Data entry screen as seen in Enketo: When entry error is made [Image 2] Reference xlsform: Constraint.xlsx (12.6 KB) Have a great day!