# How-to Guides

## End Dating Customers

When ending a customer relationship, you can cascade the end date to all inventories.

Use `PATCH /customers` with the `endDate` property and pass the optional header parameter `cascade_end_date` to automatically end-date all associated inventories.

**Example:**


```
PATCH /customers/123
Headers: cascade_end_date: true

{
  "op": "replace",
  "path": "/endDate",
  "value": "2026-12-31"
}
```