Merge pull request #522 from kinde-oss/update/billing-terms

Update/billing terms

Author: oliwolff1

src/content/docs/billing/about-billing/billing-concepts-terms.mdx

@@ -21,6 +21,12 @@ deprecated: false
 
 'Billing' refers to the broad function of creating plans, setting pricing, collecting payments, etc. Here are some of the common concepts and terms you will come across.
 
+## Billing identifiers
+
+- **Customer ID** - A `customer_id` uniquely identifies a user or org who has signed up to a plan. This is different to a `user_id` or `org_id` that identifies the user or org as an entity. 
+- **Customer Agreement ID** - A `customer_agreement_id` identifies the contract or agreement created in Stripe when a plan is signed up to. The agreement ID is then associated with the `customer_id` in Kinde.
+- **Stripe customer number** - A customer number is automatcially generated in Stripe when a customer signs up to a plan. You don't need this number to interact or do anything in Kinde. The Stripe customer number looks like this - `cus_SobqVb484c2xxx`.
+
 ## Key concepts
 
 - **Plan groups** - Plan groups organize multiple plans under a common category, helping segment offerings by use case, customer size, or market. A group is scoped to either organizations (B2B) or individual customers (B2C). You can have multiple plan groups, but each plan must belong to a group.

src/content/docs/billing/manage-subscribers/add-metered-usage.mdx

@@ -31,6 +31,8 @@ Adding usage values requires two key pieces of information:
 
 - Via the Kinde UI - Open the user or organization record in Kinde and select **Billing** in the menu. The customer agreement shows as part of the subscription details. 
 
+![Example of agreement ID in Kinde](https://imagedelivery.net/skPPZTHzSlcslvHjesZQcQ/6488a69d-a47d-413b-a3b3-47a39398b600/public)
+
 ## Get the feature ID
 
 1. Open the plan the feature belongs to.