How to add serial numbers for inventory adjustment of a particular item

How to add serial numbers for inventory adjustment of a particular item

When trying to add a serial number using Inventory adjustment via API in Postman I am facing an error like: 
{
"code": 2205,
"message": "The serial number value cannot be left empty. Please enter a valid input."
}

please help me with proper format to add serial numbers into the json.

this the json prepared by me

{
"date": "2019-09-11",
"reason": "Extra Stock",
"description": "",
"reference_number": "Test-IA-123",
"adjustment_type": "quantity",
"line_items": [
{
"item_id": 519558000000686015,
"name": "Acer 19.5-inch LED Monitor (K202HQL-AB)",
"quantity_adjusted": 1,
"item_total": 15,
"unit": "qty",
"is_combo_product": false,
"adjustment_account_name": "Cost of Goods Sold",
"warehouse_id": 519558000000076101,
"warehouse_name": "QSAI",
"serial_number_value":"TPS1234AMZ"
}
]
}