Track click conversions and Enhanced conversions using Google Ads API with no tags

[Jithin Kumar]

Hi!

I am venturing to implement conversion tracking only using Google Ads API and not Google Tag.

My plan is to send a CLick conversion with GCLID to google ads api using Upload Click Conversion API. 

I tested this setup by creating a converison action of type "UPLOAD_CLICK" and was able to successfully sent conversion.

Now, i have a case to solve. What if user started the purchase process and finish it on another device. For example i have a 3 stepped form for purchase, what if User come to the form with an Ad click and finished first step(soft conversion with GCLID) and finish the last  step (Hard/Primary conversion) later from a diffferent device, i want to attribute this conversion to the original ad click.

Thats how ended up reading about enhanced conversions and enhanced conversion for leads. But i am not able to get it to work as I am seeing some errors in the diagnostics even though my api requests are successfull.

Can you guide me with the right order of api calls and which apis should i use etc?

Just to reiterate here is a summary of Usecase & steps:

• User clicks on an Ad in google
• Landing Page
• Started filling a 3 steps form
• Finished filling the first step (secondary conversion)
  • Here we send gclid, consent, conversion action A, hashed email id (This works fine, We could see conversions being incremented)
• User drops the process
• User login from another device and continue the process
• User finishes the process (Primary conversion)
  • Here we send consent, conversion action B, hashed email id (Here we expect that conversion action B should be incremented as we expect Google to do matching using email id)

 Regards,

Jithin

[Google Ads API Forum Advisor]

Hi Jithin,

Thank you for reaching out to the Google Ads API support team.

In order to assist you further, could you please share more details on the errors that you are encountering in the diagnostics tab? Also, kindly share the conversion action name or the conversion action ID along with the Google Ads account ID under which the conversions are present to assist you further.

Could you kindly confirm if you followed the setup prerequisites for working with an offline conversion setup? If not, I would request you to follow the prerequisites before uploading offline click conversions. I would suggest you to refer to the Monitor offline data diagnostics documentation, as it helps to find the overall health of the conversion upload processes. 

You can send the details via Reply privately to the author option, or direct private reply to this email.

 

Thanks,
 

Google Ads API Team

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[2025-10-30 06:04:38Z GMT] This message is in relation to case "ref:!00D1U01174p.!500Ht01vSCld:ref" (ADR-00337295)