Retrieving a customer ID with python

bluesteel — Sun, 21 Sep 2025 09:51:58 GMT

I'm using the Python API to create a customer intake form for our system. My goal is to create a customer using fields input by users, and then edit custom customer attribute fields for their profile.

What is working: Creating a customer using input fields

What is not working: Retrieving their customer ID for use in the upsert_customer_custom_attribute command

Re: Retrieving a customer ID with python

Candlestore — Thu, 25 Jul 2024 23:49:27 GMT

@bluesteel ;

As I see this i your first post welcome to the sellers community forum.

The Customer ID field is one you assign to a customer, Square does not assign this field for your customer.

So when you say its not working, does the customer have a Refrence ID in Square?

Try putting the customers phone # in for their Refrence ID and then see if your Python API is working.

If I goto to my customers directory in Square : https://app.squareup.com/dashboard/customers/directory ;

The refrence ID is blank, maybe that is your problem too.

The Refrence ID is not autopopulated by Square.

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Retrieving a customer ID with python

Re: Retrieving a customer ID with python