PATCH /ver2/CostomFieldService.svc/customFields/bulk

envianceSdk.customFields.updateCustomFieldBulk

[
    [
        {
            "label": "Custom Field Label",
            "labelLocalizations": [
                {
                    "culture": "en-US",
                    "value": null
                },
                {
                    "culture": "zh-CN",
                    "value": "CN Label"
                }
            ],
            "name": "Some Udf 1"
        },
        {
            "caption": "Custom Field Caption_up",
            "captionLocalizations": [
                {
                    "culture": "en-US",
                    "value": "Caption US"
                },
                {
                    "culture": "ru-RU",
                    "value": "Caption RU"
                },
                {
                    "culture": "zh-CN",
                    "value": "Caption Chinese"
                },
                {
                    "culture": "en-GB",
                    "value": "Caption UK"
                },
                {
                    "culture": "es-MX",
                    "value": "Caption Spanish"
                }
            ],
            "name": "Some Udf 2"
        }
    ],
    "onsuccess",
    "onerror"
]