Hi Pooja,
Like it is mentioned in the document, Supported values are : 701,211,232,201,231
So using 421 or any other value for AccoutningBusinessTranacationTypeCode will not work then.
May I know the use case, As in is there any specific reason due to which you would like to create Journal entry with document as " Expense report " via web service.
Thanks.
Harshal