ItemPatchInput(ItemPatchInput)

{
    "inv_type": "service",
    "code": "REF-410A",
    "sales": 0,
    "purchase": 0,
    "description": "R-410A refrigerant cylinder (10 kg).",
    "tax": "tax",
    "is_labour": false,
    "external_id": "ITEM-1001",
    "coverage_uom": {
        "id": null,
        "external_id": "",
        "name": ""
    },
    "klass": {
        "id": null,
        "external_id": "",
        "name": ""
    },
    "id": "501"
}