The Order field on UI Policies is very important to how UI Policy Actions are processed. When two UI Policies contain a UI Policy Action that acts upon the same field - even if they act upon different properties of that field (visible vs. read-only, for example) - they can potentially conflict. Conflicting UI Policy Actions will be shown in the related list on the UI Policy, with a red dot indicating the issue.
You need to correct your UI polcies which are acting on same field.
