How do I find the Conversion Action ID for use in the Google Ads API?

I'm using the latest (v7) Google Ads API to upload offline conversions for Google Ads, using the Python Client Library. This is the standard code I'm using:

import os

from google.ads.googleads.client import GoogleAdsClient
client = GoogleAdsClient.load_from_env(version='v7')

def process_adwords_conversion(
    conversion_date_time, 
    gclid, 
    conversion_action_id, 
    conversion_value
):

    conversion_date_time = convert_datetime(conversion_date_time)

    customer_id = os.environ['GOOGLE_ADS_LOGIN_CUSTOMER_ID']
    click_conversion = client.get_type("ClickConversion")
    conversion_action_service = client.get_service("ConversionActionService")
    click_conversion.conversion_action = (
        conversion_action_service.conversion_action_path(
            customer_id, conversion_action_id
        )
    )
    click_conversion.gclid = gclid
    click_conversion.conversion_value = float(conversion_value)
    click_conversion.conversion_date_time = conversion_date_time
    click_conversion.currency_code = "USD"

    conversion_upload_service = client.get_service("ConversionUploadService")
    request = client.get_type("UploadClickConversionsRequest")
    request.customer_id = customer_id
    request.conversions = [click_conversion]
    request.partial_failure = True
    conversion_upload_response = (
        conversion_upload_service.upload_click_conversions(
            request=request,
        )
    )
    uploaded_click_conversion = conversion_upload_response.results[0]
    print(conversion_upload_response)
    print(
        f"Uploaded conversion that occurred at "
        f'"{uploaded_click_conversion.conversion_date_time}" from '
        f'Google Click ID "{uploaded_click_conversion.gclid}" '
        f'to "{uploaded_click_conversion.conversion_action}"'
    )

    return False

I believe the code is fine, but I'm having problems locating the conversion_action_id value to use. In the Google Ads UI there's a screen listing the different Conversion Actions, with no sign of an ID anywhere. You can click on the name and get more details, but still no ID:

The conversion action detail screen in Google Ads UI

I've tried the following:

Using the ocid, ctId, euid, __u, uscid, __c, subid URL parameters from this detail page as the conversion_action_id. That always gives an error:

partial_failure_error {
  code: 3
  message: "This customer does not have an import conversion action that matches the conversion action provided., at conversions[0].conversion_action"
  details {
    type_url: "type.googleapis.com/google.ads.googleads.v7.errors.GoogleAdsFailure"
    value: "\n\305\001\n\003\370\006\t\022dThis customer does not have an import conversion action that matches the conversion action provided.\0320*.customers/9603123598/conversionActions/6095821\"&\022\017\n\013conversions\030\000\022\023\n\021conversion_action"
  }
}

Using the standard Google answer:

https://support.google.com/google-ads/thread/1449693/where-can-we-find-google-ads-conversion-ids?hl=en

Google suggests creating a new Conversion Action and obtaining the ID in the process. Unfortunately their instructions don't correspond to the current UI version, at least for me. The sequence I follow is:

Click the + icon on the Conversion Actions page
Select "Import" as the kind of conversion I want
Select "Other data sources or CRMs" then "Track conversions from clicks"
Click "Create and Continue"

I then get the screen:

Screen following Conversion Action creation

The recommended answer says:

The conversion action is now created and you are ready to set up the tag to add it to your website. You have three options and the recommended answer in this thread is discussing the Google Tag Manager option, which is the only option that uses the Conversion ID and Conversion Label. If you do not click on the Google Tag Manager option you will not be presented with the Conversion ID and Conversion Label.

Not so! What three options? The first "Learn more" link mentions the Google Tag Manager, but in the context of collecting the GCLID, which I already have. The "three options" mentioned in the official answer have gone. Clicking "done" simply takes me back to the Conversion Actions listing.

Using the REST API

I've tried authenticating and interrogating the endpoint:

https://googleads.googleapis.com/v7/customers/9603123598/conversionActions/

hoping that would give a list of conversion actions, but it doesn't. It just gives a 404.

Does anybody know a way of getting the Conversion Action ID, either from the UI or programmatically (via client library, REST or some other method)?

Thanks!

Solution

If you're using Python, you can list your conversions via next snippet:

ads: GoogleAdsServiceClient = client.get_service('GoogleAdsService')
pages = ads.search(query="SELECT conversion_action.id, conversion_action.name FROM conversion_action", customer_id='YOUR_MCC_ID')
for page in pages:
    print(page.conversion_action)

You can also open conversion action in UI and locate &ctId=, that's the conversion action id.