Can you validate your form in here and share the screenshot with us? So we can get a better understanding of the issue you are having? ODK - XLSForm Online
It mentioned about ‘subproject_id’ variable. I wonder becasue there are 2 forms previously with the same structure template but can be deployed successfully with this variable, ‘subproject_id’. Or server only detect with some forms?
@Kal_Lam
I use KoboToolbox server, or which specific info should I give?