# Cannot create adjustments for a transaction with a missing customer_id

You are creating and adjustment for a transaction that doesn't have a Customer ID attached.

---

## Example

```json
{
  "error": {
    "type": "request_error",
    "code": "adjustment_transaction_missing_customer_id",
    "detail": "Cannot create adjustments for a transaction that doesn't have a Customer.",
    "documentation_url": "https://developer.paddle.com/errors/adjustments/adjustment_transaction_missing_customer_id"
  },
  "meta": {
    "request_id": "00000000-0000-0000-0000-000000000000"
  }
}
```

## Details

| Attribute | Value |
| --- | --- |
| Status code | 400 |
| Error code | `adjustment_transaction_missing_customer_id` |
| Error message | Cannot create adjustments for a transaction that doesn't have a Customer. |

## Common causes

- The transaction to be adjusted needs to be at least in a `billed` status.
- You may have provided the wrong transaction_id for the adjustment.

## Common solutions

- Verify the transaction has the customer_id.