On March 8, 2021  we're disabling mutates to the LeadConversionActionCategoryconversion category changes  and expanded conversion categories  announced in September 2020, which provided a finer grained categorization of conversions.Lead category through the AdWords API, resulting in ambiguity since multiple new categories map to this old category. The following table summarizes how the AdWords API will respond to mutates that set the conversion category to Lead.
  Existing Category 
  AdWords API READs (Existing behavior) 
  AdWords API Mutate to LEAD Response 
   
  Lead 
  Lead 
  OK 
 
  “Old” category 
  “Old” category 
  ERROR 
 
  
  “New” lead category 
  Lead 
  OK 
 
  
  “New” non-lead category 
  “Old” category 
  ERROR 
 
 
Lead conversion category will be mapped to Lead upon read, but will continue to be persisted as the finer grained new category. If read through the Google Ads UI or Google Ads API, the new conversion category will be accurately retrieved.ConversionTracker.Category
  New Conversion Category 
  Mapping to ConversionTracker.Category 
   
  Add to cart 
  LEAD 
 
  Begin checkout 
  LEAD 
 
  Purchase 
  PURCHASE 
 
  Subscribe 
  PURCHASE 
 
  Sign-up 
  SIGNUP 
 
  Phone call lead 
  LEAD 
 
  Imported lead 
  LEAD 
 
  Submit lead form 
  LEAD 
 
  Book appointment 
  LEAD 
 
  Request quote 
  LEAD 
 
  Get directions 
  LEAD 
 
  Outbound click 
  LEAD 
 
  Contact 
  LEAD 
 
  Download 
  DOWNLOAD 
 
  Page view 
  PAGE_VIEW 
 
  Engagement 
  DEFAULT 
 
  Store visit 
  DEFAULT 
 
  Store sale 
  PURCHASE 
 
  Other 
  DEFAULT 
 
 
forum . David Wihl , Google Ads API Team