After setting the column value and clear and updating it, the error comes out.Description"g_form.checkMandatory = false" does not work on date or date/time fields when trying to clear the value. This will cause the UI policy and client script not working properly, keep this in internal. Steps to Reproduce 1. hop to any Madrid instance2. open a new incident form, set the "Resolved" field to mandatory3. open a new incident without the frame:https://<instance>.service-now.com/incident.doin the console, type in "g_form.checkMandatory = false"Do NOT fill in the mandatory fieldsTry to save the form --You are able to save the form 4. Fill in the "Resolved" field and one of any other mandatory field.Try to save the form --You are able to save the form 5. Remove the value from "Resolved" fieldTry to save the form Expected behavior:Still able to save the form Actual behaviorNot able to save the form, notice error "Invalid update"This feature only seems to break on "date" or "date/time" types of the fields.WorkaroundThis issue is under review. To receive notifications when more information is available, subscribe to this Known Error article by clicking the Subscribe button at the top right of the article. If you are able to upgrade, review the Fixed In or Intended Fix Version fields to determine whether any versions have a planned or permanent fix. Related Problem: PRB1345556