In my requirement, for a SharePoint 2013 site I need to setup two site columns with some custom validations. The requirement is as below.
Column 1: Policy Destruction Date ( A Datepicker)
Column 2: Destruction Method (Choice type)
Validation Needed: If user selects any date on the "Policy Destruction Date" field, the "Destruction Method" would be mandatory. If the Policy Destruction Date is empty then "Destruction Method" will be disbled.
Please confirm what would be the best way to proceed for this requirement. I don't have a chance to work on Server Object Model. Only CSOM.