How do I create a product/service through Sales and Purchase mode in Quickbooks using qbXML - quickbooks-online

Question

I am trying to create a service in Quickbooks using sales and purchase mode but It only creating under sales or purchase mode even though I added sales and purchase mode. Can any one please give me the solution or any work around on this will be very much appreciated.
Edition: QBOE(6.0)
Below is the way that I am following to create a service in sales and purchase mode.
Am I missing any thing or is there any thing that I need to do at QuickBooks side apart from this?
<ItemServiceAddRq>
<ItemServiceAdd>
<Name>QBTubes</Name>
<SalesAndPurchase>
<SalesDesc>Tubes are excellent for all ages</SalesDesc>
<SalesPrice>100</SalesPrice>
<FullName>Sales</FullName>
</IncomeAccountRef>
<PurchaseDesc>Tubes are excellent for all ages</PurchaseDesc>
<PurchaseCost>80</PurchaseCost>
<ExpenseAccountRef>
<ListID>IDTYPE</ListID>
<FullName>Purchases</FullName>
</SalesAndPurchase>
</ItemServiceAdd>
</ItemServiceAddRq>
Thanks in advance.

Answer 1

The QuickBooks Online qbXML API does not support creating an item with sales and purchase information.
You can verify this by using the QuickBooks OSR documentation -
Set the OSR to use qbXML 6.0 (QuickBooks Online only supports 6.0)
Check the 'OE' checkbox
Uncheck the 'US' checkbox
Choose "ItemServiceAdd" from the "Select Message" drop-down menu
The schema is defined as:
<?xml version="1.0" encoding="utf-8"?>
<?qbxml version="6.0"?>
<QBXML>
<QBXMLMsgsRq onError="stopOnError">
<ItemServiceAddRq>
<ItemServiceAdd> <!-- required -->
<Name >STRTYPE</Name> <!-- required -->
<ParentRef> <!-- optional -->
<ListID >IDTYPE</ListID> <!-- optional -->
<FullName >STRTYPE</FullName> <!-- optional -->
</ParentRef>
<!-- BEGIN OR -->
<SalesOrPurchase> <!-- optional -->
<Desc >STRTYPE</Desc> <!-- optional -->
<!-- BEGIN OR -->
<Price >PRICETYPE</Price> <!-- optional -->
<!-- OR -->
<PricePercent >PERCENTTYPE</PricePercent> <!-- optional -->
<!-- END OR -->
<AccountRef> <!-- optional -->
<ListID >IDTYPE</ListID> <!-- optional -->
<FullName >STRTYPE</FullName> <!-- optional -->
</AccountRef>
</SalesOrPurchase>
<!-- OR -->
<!-- END OR -->
</ItemServiceAdd>
</ItemServiceAddRq>