/enums/conversion_action_type.proto 

--- v18/enums/conversion_action_type.proto  2025-08-05 14:36:10.000000000 +0000
+++ v19/enums/conversion_action_type.proto  2025-08-05 14:36:18.000000000 +0000
@@ -142,8 +142,10 @@
     // Conversions reported when a user submits a lead form. Read only.
     LEAD_FORM_SUBMIT = 29;

-    // Conversions that come from Salesforce. Read only.
-    SALESFORCE = 30;
+    // Deprecated: The Salesforce integration will be going away and
+    // replaced with an improved way to import your conversions from Salesforce.
+    // - see https://support.google.com/google-ads/answer/14728349
+    SALESFORCE = 30 [deprecated = true];

     // Conversions imported from Search Ads 360 Floodlight data. Read only.
     SEARCH_ADS_360 = 31;