createTransaction web service

Summary

How to map custom fields from the transaction level and transaction line level in soap XML file of createTransaction

Content

How to map custom fields from the transaction level and transaction line level in soap payload of createTransaction

Dear All,

We have to create a transaction using create transaction WDSL 
we want to give custom field values in soap request payload while creating a transaction
We are able to create the transaction but not able to update the custom fields

please refer the soap request payload 
<?xml version="1.0" encoding="UTF-8"?><soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"&gt