What's changing October 9, 2023 , the Google Ads API will allow the following types of mutate operations for a ConversionAction  imported from a Google Analytics 4 (GA4) property:
  An update that modifies status, primary_for_goal, category, name, or value_settings. 
  A remove that removes the conversion action. 
 
Why this is important create a link  between your Google Analytics and Ads accounts, but you could not use the Google Ads API to complete the following remaining steps in the linking process:
With this change, the Google Ads API supports both of these steps and provides a complete API-based solution for linking your Google Analytics 4 property to your Google Ads account.conversion goals , you can now modify the following attributes of an imported GA4 ConversionAction:
Requests that attempt to modify any other attributes of an imported GA4 ConversionAction will continue to fail, as will requests that attempt to remove or update a ConversionAction imported from a Universal Analytics (UA) property.What you should do ConversionActionOperationMUTATE_NOT_ALLOWEDupdate or remove an imported GA4 conversion. For example, if your integration relies on this behavior to detect if a conversion action is an imported GA4 conversion, modify it to instead check if the typeConversionAction is either GOOGLE_ANALYTICS_4_CUSTOM or GOOGLE_ANALYTICS_4_PURCHASE.How to get help support page  for options.