Mautic users with same first/last name but different everything else causing API failures

[michael-ferioli]

Mautic Version

4.4.x series

Way of installing

I downloaded a release from https://www.mautic.org/mautic-releases

PHP version

8.0.30

What browsers are you seeing the problem on?

Chrome

What happened?

If there are multiple users with the same first and last names but all other attributes are different (including email, username, etc.) then API calls that include a User ID will fail with a 400 error. Changing the last name on one of the users fixed the problem.

In the following example, we had user 200 and user 28 each with the same first/last name but other attributes were different.

We made a call to /contacts/:id/edit with owner_id=200 and we got a 400 error with this response:

{ "errors": [ { "code": 400, "message": "owner: This value is not valid.", "details": { "owner": [ "This value is not valid." ] } } ] }

How can we reproduce this issue?

1. Create two Mautic users with the same first/last name but all other attributes different.
2. Create a contact with no owner in the UI.
3. Use Postman to update the owner_id using the PATCH /contacts/:id/edit endpoint and owner_id set to either of the users you setup in step 1 above.
4. Notice that you get a 400 response.
5. Change the last name of either of the users from step Emails triggering 500 server errors #1.
6. Repeat step 'Apply' in configuration settings #3.
7. Notice that it works this time.

Relevant log output

No response

Code of Conduct

• I confirm that I have read and agree to follow this project's Code of Conduct

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[escopecz]

How did you define the owner in your request? By ID or first and last name?