Transaction missing customer for adjustment

{
  "error": {
    "type": "request_error",
    "code": "adjustment_transaction_missing_customer_id",
    "detail": "Can't create an adjustment for a transaction without a customer.",
    "documentation_url": "https://developer.paddle.com/errors/adjustments/adjustment_transaction_missing_customer_id"
  },
  "meta": {
    "request_id": "00000000-0000-0000-0000-000000000000"
  }
}

Details

Status code

400

Error code

adjustment_transaction_missing_customer_id

Error message

Can't create an adjustment for a transaction without a customer.

Common causes

• The transaction you're trying to adjust doesn't have a customer_id. Adjustments require the transaction to have a customer and be at least in billed status.
• You may have provided the wrong transaction_id for the adjustment.

Troubleshooting

• Verify the transaction has a customer_id attached.
• Check that the transaction_id you provided is correct.