Reply To: Troubleshooting 404 Error when Implementing GA4 in ColdFusion without Client Library

[Harper]

I see where you’re coming from, and I think there’s just a little mix-up! Your JSON is not behaving as expected because it should be sent as the POST “body” instead of as a formfield named “reportRequests”. Here’s an example:

<cfscript>
    // Let's set up our JSON request
    requestJSON = {
       "dateRanges": [{ "startDate": "2023-01-01", "endDate": "2023-03-14" }],
       "dimensions": [{ "name": "sourceMedium" }, { "name": "transactionId" }, { "name": "date" }, { "name": "defaultChannelGroup" }, { "name": "campaignName"}],
        "metrics": [{ "name": "purchaseRevenue" }]
    };
    
    // And now let's send it out!
    cfhttp(method = 'POST', charset = 'utf-8', url = 'https://analyticsdata.googleapis.com/v1beta/properties/#brand.propertyId#:runReport', result = 'result') {
        cfhttpparam(name = 'Accept', type = 'header', value = 'application/json');
        cfhttpparam(name = 'Authorization', type = 'header', value = 'Bearer #accessToken#');
        cfhttpparam(type = 'body', value = serializeJSON(requestJSON));
    }
                
    // Now we just need to parse our result
    GA4Data = deserializeJSON(result.fileContent);
</cfscript>

With this approach, I think you’ll be back on track in no time. Give it a try!