Hello!

I’m a relatively new developer, especially in the world of Klaviyo. I’m trying to update the campaign message using the docs found at this link:

https://developers.klaviyo.com/en/reference/update_campaign_message?utm_source=google-search&utm_medium=paid-search&utm_campaign=7013o000002L2zGAAS&utm_content=NA-Brand-Features-SMS&utm_keyword=klaviyo%20sms&utm_matchtype=b&gad_source=1&gclid=Cj0KCQjw2ou2BhCCARIsANAwM2FyvT-6z6X_8GYiA2UO_f_8Ngt_C30mFTmcrPU5k7Vn9jcax4tnSxQaAg1fEALw_wcB&gclsrc=aw.ds

I keep getting a failure which says the authentication isn’t working. I know my API key works because it works in a different part of my code. This is the code that I’m using (help from ChatGPT):

 

import requests

def update_campaign_message(campaign_message_id, subject, preview_text, from_email='x@mycompany.com', from_label='X Company', reply_to_email='x@mycompany.com', cc_email=None, bcc_email=None):
    """
    Updates the content of an existing campaign message in Klaviyo with custom details.

    Parameters:
        campaign_message_id (str): The ID of the campaign message to update.
        subject (str): The subject of the email.
        preview_text (str): The preview text of the email.
        from_email (str): The sender email address.
        from_label (str): The sender name.
        reply_to_email (str): The reply-to email address.
        cc_email (str, optional): The CC email address.
        bcc_email (str, optional): The BCC email address.

    Returns:
        response (dict): The JSON response from the Klaviyo API, or an error message.
    """

    url = f"https://a.klaviyo.com/api/campaign-messages/{campaign_message_id}/"

    # Payload to update the campaign message with the new content
    payload = {
        "data": {
            "type": "campaign-message",
            "id": campaign_message_id,
            "attributes": {
                "label": "Updated Campaign Message",
                "content": {
                    "subject": subject,
                    "preview_text": preview_text,
                    "from_email": from_email,
                    "from_label": from_label,
                    "reply_to_email": reply_to_email
                },
                "render_options": {
                    "shorten_links": True,
                    "add_org_prefix": True,
                    "add_info_link": True,
                    "add_opt_out_language": False
                }
            }
        }
    }

    # Headers for the request
    headers = {
        "accept": "application/json",
        "revision": revision,
        "content-type": "application/json",
        "Authorization": f"Klaviyo-API-Key {KLAVIYO_API_KEY}"
    }

    try:
        # Make the PATCH request to update the campaign message content
        response = requests.patch(url, json=payload, headers=headers)
        
        # Check if the request was successful
        response.raise_for_status()
        
        # Return the JSON response
        return response.json()
    
    except requests.exceptions.HTTPError as http_err:
        print(f"HTTP error occurred: {http_err}")
        return None
    except Exception as err:
        print(f"Other error occurred: {err}")
        return None

Thank you for your help!