Trouble with JSON Processing in Hubspot API Integration

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1

Hey folks, I’m stuck with a Hubspot API issue. I’m trying to sync company properties between two Hubspot accounts. My code’s supposed to create new properties in the destination account if they don’t exist there.

Here’s the weird part: I’m checking if the JSON is valid before sending it, but I’m still getting errors. The API is saying it can’t process the JSON or that there’s an unexpected character.

I’ve been at this for hours and I’m totally lost. Can anyone spot what I’m doing wrong? Here’s a simplified version of my code:

var newProperty = new CompanyProperty
{
    name = "custom_field",
    label = "Custom Field",
    type = "string",
    groupName = "info"
};

string json = JsonConvert.SerializeObject(newProperty);

if (JsonHelper.IsValidJson(json))
{
    try
    {
        var request = WebRequest.Create(apiUrl);
        request.Method = "POST";
        // Send the request
    }
    catch (Exception e)
    {
        // Handle error
    }
}

Any ideas on what could be causing this? Thanks in advance!

2

I’ve encountered similar issues with the Hubspot API before. One thing to check is the content type header of your request. Make sure you’re setting it to ‘application/json’. Also, double-check that your API endpoint URL is correct for creating company properties.

Another potential issue could be the JSON serialization itself. Try using JsonSerializerSettings to ensure proper formatting:

var settings = new JsonSerializerSettings { NullValueHandling = NullValueHandling.Ignore };
string json = JsonConvert.SerializeObject(newProperty, Formatting.None, settings);

This will omit any null values which could be causing issues. Lastly, verify that your API key has the necessary permissions to create properties. Hope this helps!

3

I’ve been down this road with Hubspot’s API, and it can be a real headache. One thing that’s not immediately obvious is that Hubspot can be picky about property names. Make sure your ‘name’ field doesn’t have any spaces or special characters - stick to lowercase letters and underscores.

Also, have you tried logging the exact JSON you’re sending? Sometimes it helps to see what’s actually going out. You might find that some unexpected character is sneaking in there.

Another thing to consider is the API version you’re using. Hubspot occasionally updates their API, and older versions might have quirks with JSON processing. Check their documentation to ensure you’re using the most recent version that’s compatible with your integration.

Lastly, if all else fails, try constructing the JSON manually as a string. It’s not elegant, but it can help pinpoint where the issue lies. Good luck with your integration!

4

yo, had similar probs w/ hubspot. make sure ur not sendin any weird characters in the json. sometimes their api gets funky with that. also, try loggin the exact json ur sendin - might catch somethin weird. if nothin else works, hit up their support. they can be slow but usually help out eventually