These errors occur when the Google Ads API fails to recognize a field in your request.
Possible Causes & Fixes:
1. Incorrect Field Name
Fix: Check the field name spelling and verify it against the Google Ads API Reference.
2. Field Not Supported in API Version
Fix: Ensure you are using the latest Google Ads API version or verify that the field exists in your API version.
3. Field Not Available in Selected Resource
Fix: Ensure the requested field belongs to the correct entity (e.g., campaign, ad group).
4. Improper Query Structure in GAQL
Fix: Validate your Google Ads Query Language (GAQL) syntax using the Google Ads Query Validator.
