curl --request POST \
  --url https://api.example.com/api/v1/purchase-orders/{po_id}/create-bill \
  --header 'Content-Type: application/json' \
  --data '
{
  "billNumber": "<string>",
  "billType": "<string>",
  "supplierId": "<string>",
  "dueDate": "<string>",
  "status": "<string>",
  "notes": "<string>",
  "subtotal": 123,
  "taxRate": 123,
  "taxAmount": 123,
  "totalAmount": 123,
  "paidAmount": 123,
  "remainingBalance": 123,
  "currency": "<string>",
  "managementAccountId": "<string>",
  "sourceOfFunds": "<string>"
}
'

{
  "id": "<string>",
  "billNumber": "<string>",
  "status": "<string>",
  "totalAmount": 123,
  "createdAt": "<string>"
}