Skip to main content
Solved

[409] A profile already exists with one of these identifiers.


Forum|alt.badge.img+1
  • Contributor III
  • 5 replies

Hello, I hope you are doing well. 
Guys I need your help please with this:
I am encountering this message when I want to add or create a profile I have this message: [409] A profile already exists with one of these identifiers.
Knowing that the list is empty: 

 

I wnat to know if this could be solves or the module is deprecated also how can I use the API call please.

I know how to fill  headers but data part is new to me.


 

Thanks a lot guys appreciate your help

Best answer by saulblum

This error usually means you are trying to create a new profile that has an email address of a profile that already exists in the Klaviyo account.

View original
Did this topic or the replies in the thread help you find an answer to your question?

6 replies

Forum|alt.badge.img+1
  • Author
  • Contributor III
  • 5 replies
  • January 15, 2025

Please Help guys 🙏🏻


Forum|alt.badge.img+7
  • Klaviyo Employee
  • 168 replies
  • Answer
  • January 15, 2025

This error usually means you are trying to create a new profile that has an email address of a profile that already exists in the Klaviyo account.


Mich expert
Problem Solver IV
Forum|alt.badge.img+11
  • Problem Solver IV
  • 64 replies
  • January 15, 2025

The [409] A profile already exists with one of these identifiers error means you're trying to create a new profile with an email address (or another unique identifier) that already exists in your Klaviyo account.as ​@saulblum says let me provide more  the details

Here’s how to resolve it:

1. Check for Existing Profiles

  • Even if your list appears empty, the profile might exist in your account but isn’t associated with a specific list.
  • Use the Search Profiles feature in Klaviyo to check if the email or identifier already exists.

2. Update Instead of Create

  • If the profile exists, use the Update Profile API instead of creating a new one.
  • Example API call:
     

    json

    Copy code

    { "email": "existing_email@example.com", "properties": { "FirstName": "New First Name", "LastName": "New Last Name" } }

3. API Reference

  • Use the Identify Profile API to create or update a profile dynamically.
  • Example cURL:
     

    bash

    Copy code

    curl -X POST https://a.klaviyo.com/api/identify \ -H "Content-Type: application/json" \ -d '{ "api_key": "YOUR_API_KEY", "properties": { "$email": "user@example.com", "FirstName": "John", "LastName": "Doe" } }'

4. If the Profile Should Not Exist

  • If you’re certain the profile shouldn’t exist, delete it via the Delete Profile API before creating a new one.

Would you like help writing a specific API call or debugging further?

 

Best regard 

micheal expert

klaviyo and shopify expert


Forum|alt.badge.img+1
  • Author
  • Contributor III
  • 5 replies
  • January 15, 2025

Hey ​@Mich expert, thansk a lot man.
I tried also to join on whatsapp.
Also I have this error on update profile API, latest update: https://developers.klaviyo.com/en/reference/update_profile
I would like help to write it please yes, and I would like also to know how I can filter the profiles to add or not depending on another module

 

MANSIR2094
Problem Solver IV
Forum|alt.badge.img+13
  • Problem Solver IV
  • 174 replies
  • January 16, 2025

Hello ​@Youss , thanks for reaching out. The 409 error indicates a conflict, often caused by an existing profile with the same identifier, even if not visible in your list. Check for duplicates or orphaned data via the API. Ensure you're using the correct API endpoint to fetch existing profiles before creating a new one. For the data part, refer to the API documentation for the required structure and payload.

 

If this seems complex, feel free to reach out for personalized implementation assistance.

 


Mich expert
Problem Solver IV
Forum|alt.badge.img+11
  • Problem Solver IV
  • 64 replies
  • January 16, 2025

Hello ​@Youss , thanks for reaching out. The 409 error indicates a conflict, often caused by an existing profile with the same identifier, even if not visible in your list. 

Sure, happy to help with the Update Profile API and filtering logic!

Using Klaviyo's Update Profile API

Here’s how to structure the API call to update a profile:

API Endpoint

https://a.klaviyo.com/api/profiles/<PROFILE_ID>/
Replace <PROFILE_ID> with the unique identifier of the profile you want to update.

Example Request (cURL)

 

bash

CopyEdit

curl -X PATCH https://a.klaviyo.com/api/profiles/<PROFILE_ID>/ \ -H "Content-Type: application/json" \ -H "Authorization: Klaviyo-API-Key <YOUR_API_KEY>" \ -d '{ "properties": { "FirstName": "John", "LastName": "Doe", "CustomField": "CustomValue" } }'

  • <PROFILE_ID>: Get this via the Search Profiles API using the email or other identifiers.
  • Authorization: Replace <YOUR_API_KEY> with your private Klaviyo API key.

How to Filter Profiles Before Adding/Updating

You can use the Search Profiles API to check if a profile exists and make decisions based on its data.

Search Profiles API Example

 

bash

CopyEdit

curl -X GET "https://a.klaviyo.com/api/profiles/?email=user@example.com" \ -H "Authorization: Klaviyo-API-Key <YOUR_API_KEY>"

  • If the profile exists: Use the PATCH method to update it.
  • If the profile does not exist: Use the Identify API to create a new one.

Automate Filtering Logic

Here’s a Python example for automating the process:

 

python

CopyEdit

import requests API_KEY = "YOUR_API_KEY" BASE_URL = "https://a.klaviyo.com/api/" def get_profile_by_email(email): response = requests.get( f"{BASE_URL}profiles/", params={"email": email}, headers={"Authorization": f"Klaviyo-API-Key {API_KEY}"} ) return response.json() def update_or_create_profile(email, properties): profile = get_profile_by_email(email) if profile['data']: # Update the existing profile profile_id = profile['data'][0]['id'] response = requests.patch( f"{BASE_URL}profiles/{profile_id}/", json={"properties": properties}, headers={"Authorization": f"Klaviyo-API-Key {API_KEY}"} ) else: # Create a new profile response = requests.post( f"{BASE_URL}identify", json={"api_key": API_KEY, "properties": {"$email": email, **properties}} ) return response.json() # Example usage email = "user@example.com" properties = { "FirstName": "Jane", "LastName": "Doe", "CustomField": "Value" } response = update_or_create_profile(email, properties) print(response)

 

 

If the issue still continue you can reach out to me