curl --location --request POST 'https://api.yonyouup.com/api/purchaseorder/add?from_account&to_account&app_key&token&tradeid&biz_id' \
--header 'Content-Type: application/json' \
--data-raw '{
"purchaseorder":{
"vendorcode":"01003",
"entry":[
{
"inventorycode":"01019002070",
"quantity":"3",
"ivouchrowno":"1"
},
{
"inventorycode":"01019002069",
"quantity":"5",
"ivouchrowno":"2"
}
]
}
}'{
"errcode": "string",
"errmsg": "string",
"id": "string",
"tradeid": "string"
}