Field-Level Security Warning

Force.com IDE is in a maintenance-only state. We still provide support for the product through our official channels, but updates prior to October 12, 2019 will be only for critical security issues that arise. On October 12, 2019, we will no longer provide support or updates of any kind for Force.com IDE. On that date, we will also begin archiving documentation and removing download links for the product. We recommend that you start migrating to Salesforce Extensions for Visual Studio Code or one of the great tools made by our partners. For more information, see The Future of Salesforce IDEs on the Salesforce Developers Blog.

Warning

Including both objects and profiles in your project will cause profiles to contain field-level security for all of that object's fields. The settings in your project will overwrite field-level security settings on the server when the profiles are deployed. If you are developing in a sandbox where field-level security is not set up correctly, and you deploy to a production organization, you will overwrite the field-level security in the production organization. To prevent overwriting production field-level security, do one of the following:

Do not include profiles in your project
Only choose object fields for which you want to overwrite the field-level security
Make sure your sandbox security settings are exactly the same as your production org

Force.com IDE Developer Guide

Field-Level Security Warning