Google Ads primarily uses error messages and codes to communicate issues with users. While the specific error messages and codes can change, here are some common ones that you might encounter:

  1. Authorization Errors:

    • "AuthenticationError": Indicates a problem with user authentication or authorization.

  2. Validation Errors:

    • "ValidationError": Points to issues with the input provided, such as missing or incorrect parameters.

  3. Policy Violations:

    • "PolicyViolationError": Indicates that an ad or campaign is violating Google Ads policies.

  4. Budget and Billing Errors:

    • "BudgetError": Relates to budget-related issues.
    • "BillingError": Relates to problems with billing and payments.

  5. Ad Approval Issues:

    • "AdError": Indicates general problems with ads.
    • "AdWordsPolicyError": Specific to ad policy violations.

  6. Targeting and Settings Errors:

    • "TargetingSettingError": Relates to targeting options, bid adjustments, or campaign settings.

  7. Quality Score and Ad Rank Issues:

    • "AdGroupAdError": Indicates issues at the ad group level.
    • "QualityScoreError": Relates to Quality Score problems.

  8. Campaign Management Errors:

    • "CampaignError": Relates to issues with campaign management.

  9. Ad Extension Errors:

    • "AdExtensionError": Indicates issues with ad extensions.

  10. Keyword Errors:

    • "KeywordError": Relates to issues with keywords.

These error messages are often accompanied by more detailed information, helping you understand and resolve the specific problem. The best way to get accurate and up-to-date information about Google Ads error messages is to refer to the official Google Ads API documentation or the error details provided in your Google Ads account interface.