How to find that a field is not supported in Salesforce Metadata API?

Hello,

The following components can’t be retrieved or deployed with Metadata API, and changes to them must be made manually in each of your organizations:

Account Teams
Activity Button Overrides
Analytic Settings
Automated Case User Settings
Auto-number on Customizable Standard Fields
Campaign Influences
Case Contact Roles
Case Feed Layouts
Case Team Roles
Console Layouts
Multiline layout fields for contract line items
Currency Exchange Rates
Data Category Visibility Settings
Delegated Administration
Divisions
Fiscal Year
File Upload and Download Security Settings
Lead Settings
Live Agent chats routed with Omni-Channel
Mail Merge Templates
Mobile Administration
Mobile Users and Devices
Multiline layout fields for opportunity teams
Offline Briefcase Configurations
Opportunity Big Deal Alerts
Opportunity Update Reminders
Organization Wide Email Addresses
Outlook Configurations
Partner Management
The following standard picklists: IdeaTheme.Categories, Order.Status, Question.Origin. (All other standard picklists are supported.)
Predefined Case Teams
Product Schedule Setup
Public and Resource Calendars
Quote Templates
Salesforce to Salesforce
Self-Service Portal Font and Colors
Self-Service Portal Settings
Self-Service Portal Users
Self-Service Public Solutions
Self-Service Web-to-Case
Service report templates
Site.com
Social Account/Contact Settings
Social Business Rules
Social Customer Service Settings
SoftPhone Layout
Solution Categories
Solution Settings
Standard fields that aren’t customizable, such as autonumber fields or system fields
Tag Settings
Territory Assignment Rules
User Interface Settings (except calendar features, which are supported in ActivitiesSettings)
Web Links on Person Account Page Layouts
Web-to-Lead

Thanks.