Are all questions on the DS-160 mandatory?
Most questions are mandatory and must be answered in the spaces provided. You may leave spaces blank when the questions are marked “optional.” You may answer a question with “Does Not Apply,” when that question does not apply to you; however, all other questions must be answered. The system will not allow you to submit an application with any mandatory questions left unanswered. When a mandatory question has not been completed, an error message will be displayed and you will be required to answer the question before continuing with the application. If you do not answer questions that apply to your circumstances and/or purpose of travel, your form may be rejected.