你好，我的API最近几天在采购的时候经常会弹503的错误，详细的地址信息我用了XXXXX替代，帮我看看是什么问题
{
"orderInfo": {
"cartId": "C363521479",
"checkoutProfileId": "F5CF3649830Axxxxx",
"currencyCode": "CNY",
"orderDate": "2023-04-27T08:58:23Z",
"orderEntry": "API",
"customerPurchaseOrderNumber": "LM2841YMK-ADJL/NOPB1682603902986",
"orderedBy": "andi zhao ",
"application": "PC & notebooks",
"endEquipment": "Chromebook & WOA",
"intendedForMilitary": false,
"isProductionOrder": true,
"totalOrderSummary": {
"subTotal": 264270.0,
"estimatedDiscountAmount": 0.0,
"estimatedShippingCost": 226.0,
"estimatedTaxes": 34384.48,
"orderTotal": 298880.48
},
"lineItems": [{
"tiLineItemNumber": "0",
"customerLineItemNumber": "1",
"tiPartNumber": "LM2841YMK-ADJL/NOPB",
"tiPartDescription": "4.5V to 42V, 300mA SIMPLE SWITCHER® buck converter in thin SOT-23",
"partType": "IC",
"quantity": 30000,
"shippedQuantity": 0,
"unitPrice": 8.809,
"netPrice": 264270.0,
"packageInformation": {
"carrier": "SMALL T&R",
"delivery": [{
"type": "Full reel",
"quantity": 30000
}]
},
"waiverAvailable": "false",
"trackingAndShipping": [{
"trackingNumbers": [{
"shippingFromCountryCode": "Singapore",
"serviceLevel": "International economy"
}]
}]
}],
"shippingAddress": {
"firstName": "XXXXX",
"lastName": "XXXXX",
"company": "XXXXX",
"addressLine1": "XXXXX",
"addressLine2": "XXXXX",
"city": "Shenzhen",
"stateRegion": "XXXXX",
"postalCode": "XXXXX",
"regionCode": "CN",
"region": "China",
"email": "XXXXX",
"phoneNumber": "XXXXX",
"companyUrl": "XXXXX"
},
"billingAddress": {
"firstName": "XXXXX",
"lastName": "XXXXX",
"company": "XXXXX",
"addressLine1": "XXXXX",
"addressLine2": "XXXXX",
"city": "XXXXX",
"stateRegion": "XXXXX",
"postalCode": "XXXXX",
"regionCode": "XXXXX",
"region": "XXXXX",
"email": "XXXXX",
"phoneNumber": "XXXXX",
"companyUrl": "XXXXX"
},
"taxInfo": {
"taxExemption": false
},
"vatDetails": [{
"type": "SPECIALPAPERINVOICE"
}]
},
"errors": [{
"section": "Generic",
"errorCode": "ERR-TICOM-ORDER-API-PRO-0503",
"reason": "At this point of time , we will not be able to check , if the inventory is available or not",
"message": "Resubmit your request at a later point in time."
}]
