I have a date field associated with a particular case type. When I try to create a new case, it is failing because the dates are empty. However, when I created the custom data, I did not make them required. There is one custom field that seems to work but it submits the empty field as '' (an empty string) as opposed to null.
Why is there a not null constraint on those fields, and ok to fix this by manually setting all those columns to allow null values?
We are using Drupal 7, CiviCRM 4.7.4