---
title: Update
slug: xero/9QI8-update
description: Learn how to efficiently update an invoice in Xero using Apex code with this comprehensive document. It covers step-by-step instructions, including sample code for creating a map to store invoice data and updating line items. Additionally, discover how to
docTags: 
createdAt: 2021-11-02T07:47:02.000Z
---

To update an Invoice in Xero, make sure you set the field "InvoiceID" with the unique reference value (ID generated by Xero for the Invoice) 

:::CodeblockTabs
Request

```apex
//  Create a Map to store all the data of a Invoice
List<Object> invoiceList = new List<Object>();
Map<String,Object> invoiceMap = new Map<String,Object>();
    invoiceMap.put('InvoiceID', 'c473fb66-9e4c-445a-9855-bba92d6629e9');
    invoiceMap.put('Status', 'AUTHORISED');
    invoiceMap.put('Reference', 'Test Invoice');

    //  Updating the Invoice Line Items
    List<Object> lineItemList = new List<Object>();
        Map<String, Object> lineItemMap = new Map<String, Object>(); 
        lineItemMap.put('Description','Line Item Description Updated');
        lineItemMap.put('LineItemID','c638e3bd-3427-485f-a5f4-ea8b2b4742d4');
        lineItemMap.put('UnitAmount',100);
        lineItemMap.put('Quantity',10);
		lineItemMap.put('AccountCode', '200');
        lineItemList.add(lineItemMap);
        
    //  Adding the Line Items to Invoice
    invoiceMap.put('LineItems',lineItemList);
    invoiceList.add(invoiceMap);

//  Initializing the RequestJSON Data to be passed.
    Map<String, Object> reqJSONMap = new Map<String, Object>(); 
    reqJSONMap.put('invoices' , invoiceList); 
    String reqJSON = JSON.serialize(reqJSONMap); 

    Map<String, Object> finalReqMap = new Map<String, Object>(); 
    Map<String,Object> reqOptions = new Map<String,Object>(); 
    finalReqMap.put('queryParameters' , reqOptions); 
    finalReqMap.put('version' , '1.0'); 
    finalReqMap.put('action' , 'updateInvoice'); 
    finalReqMap.put('RequestJSON' , reqJSON); 
    finalReqMap.put('skipDML' , false); 
    //Required, if Xero Multi-Org is enabled in Breadwinner. 
    finalReqMap.put('xeroOrgId', '!aa00TM');
    System.debug('Request ::: ' + finalReqMap);

//  Placing a request to Breadwinner Global API
    Map<String, Object> respMap = bread_winner.BreadwinnerXeroAPI.call(finalReqMap);
    System.debug('Response ::: ' + respMap);
```

Response

```json
{
   action=updateInvoice,
   responseJSON={
      "statusCode":200,
      "invoices":[
         {
            "UpdatedDateUTC":null,
            "Type":"ACCREC",
            "TotalTax":0.00,
            "TotalDiscount":null,
            "Total":1000.00,
            "Telephone":"",
            "SubTotal":1000.00,
            "Status":"AUTHORISED",
            "SentToContact":false,
            "SalesforceRecordId":"a0K7F00001eFt7EUAS",
            "Reference":"Test Invoice",
            "PurchaseOrderNumber":null,
            "PurchaseOrderID":null,
            "Payments":null,
            "LineItems":[
               {
                  "UnitAmount":100.00,
                  "Tracking":[
                     
                  ],
                  "TaxType":"OUTPUT",
                  "TaxAmount":0.00,
                  "Quantity":10.0000,
                  "LineItemID":"c638e3bd-3427-485f-a5f4-ea8b2b4742d4",
                  "LineAmount":1000.00,
                  "ItemCode":null,
                  "DiscountRate":null,
                  "Description":"Line Item Description Updated",
                  "AccountCode":"200"
               }
            ],
            "LineAmountTypes":"Exclusive",
            "IsDiscounted":false,
            "InvoiceNumber":"INV-0003",
            "InvoiceID":"c473fb66-9e4c-445a-9855-bba92d6629e9",
            "HasErrors":false,
            "DueDateString":"2021-12-06T00:00:00",
            "DueDate":"/Date(1638748800000+0000)/",
            "DeliveryInstructions":"",
            "DeliveryDateString":null,
            "DeliveryDate":null,
            "DeliveryAddress":"",
            "DateVariable":"/Date(1636588800000+0000)/",
            "DateString":"2021-11-11T00:00:00",
            "CurrencyRate":1.0000000000,
            "CurrencyCode":"INR",
            "CreditNotes":null,
            "Contact":{
               "Name":"Test Contact 1",
               "ContactStatus":"ACTIVE",
               "ContactID":"3d2df469-b041-4246-a50b-142e87631aa9"
            },
            "BrandingThemeID":"8e43230b-c814-4435-bdb4-84cad1875e3d",
            "AttentionTo":"",
            "AmountPaid":0.00,
            "AmountDue":1000.00,
            "AmountCredited":0.00
         }
      ],
      "errors":[
         
      ]      
   },
   timestamp=1636616272349,
   validRequest=true,
   version=1.0
}
```
:::