Remove This Application Was Created By A Google Apps Script User -

If your app is used only by members of your Google Workspace organization, you can eliminate the warning without full public verification.

Steps:

Users inside your domain will no longer see the warning. External users will still see it. If your app is used only by members

If your script does not actually need sensitive scopes, remove them from appsscript.json and the OAuth consent screen.

Common scopes that trigger verification: Users inside your domain will no longer see the warning

Replace them with less sensitive scopes:

If you use no sensitive scopes and deploy as a web app with Execute as me and Access: Anyone, the warning may disappear automatically after a few days or for users who are signed into Google. Submit

Most simple automations can avoid restricted scopes. If you need unrestricted Drive or Gmail access, be prepared for significant costs.

Once your consent screen is saved:

The banner is not a bug — it's a deliberate security feature by Google. End users will always see a disclaimer when running unverified or user-created scripts.