Webhook User ID Collision & Per-Product Customer Creation Missing

[zaidmukaddam]

Description

There are two main issues:

1. Webhook Collision:
   When a user signs up on one platform (e.g., Platform A), the webhook uses that external user ID. If the same user later signs up via another platform (e.g., Platform B), the webhook still refers to the original external user ID from Platform A, leading to data collisions.

2. Customer Creation on Signup:
   If a user already exists in the system from one product, signing up for a different product doesn’t trigger customer creation again. But in our use case, users should be treated as separate customers per product, even if their core user account already exists.

Current Behavior

• Webhooks use the external user ID from the first platform a user signed up from, regardless of the current platform.
• Customer creation logic skips users that already exist, even when signing up for a different product.

Expected Behavior

• Webhooks should respect platform context and not reuse external user IDs across platforms.
• Customer creation should occur per product context, even if the user already exists in the system.

[frankie567]

I'm not sure I follow you entirely, but I guess the two problems are tightly related, and actually by design.

1. When you talk about Platform, what are you referring to? A Polar organization or one of your product?
2. This is by design. Customers are unique per email and external ID in a Polar organization. You can't have several customers with the same email / external ID in the same organization.

[zaidmukaddam]

I have two different products in the same organization! Didn't know about unique customer id will look into that.

this is how i have used the webhook: https://github.com/zaidmukaddam/scira/blob/main/lib/auth.ts#L99

[frankie567]

If you have two different products, with each one their own set of users/customers, then you should create a separate organization for each one of them. It's also important in terms of compliance and account reviews.

[zaidmukaddam]

okay makes sense will do that!