Data Type: Ext
| Parameter | Type | Description | Required/Optional | Notes |
|---|---|---|---|---|
| ext_xxx | field type registered in the TD system | field value registered in the TD system | Optional | |
| ext_xxxx | field type registered in the TD system | field value registered in the TD system | Optional |
{
"ext_book_id": "LFOUHOFHOHFNOUH",
"ext_book_num": 10
}