How to make one of the fields mandatory in this question. For example if the user has answered first question then the second question is not mandatory

[Kal_Lam]

@dipendra, maybe you could try this custom logic (discussed previously) that should fulfill your requirement:

Custom Logic in Mandatory Response

Hi @adepuk, It’s not always that you wish to see your variables mandatory (where the variable should be filled, else the filled-up form would not get submitted to the KoBoToolbox server) or optional (where the variable could be left blank and the filled-up form could still be submitted to the KoBoToolbox server). You might sometimes wish to make it mandatory for certain criteria. It is a form of a mandatory response if and only if it meets a certain criteria else it would act as an optional re…