error 37 on file exchange

[allsorts1003]

i am having trouble uploading a list of items keep getting the following message-  but i cannot find a tag for item listing type on the csv file anybody got any ideas (am sure its me missing something)

"Error - Input data for tag <Item.ListingType> is invalid or missing. Please check API documentation.|Item.ListingType|"

[plum993]

There are several possible answers for this so check here in the link below,and if no luck post your question there where you will get a bigger audience and possible answers,https://community.ebay.co.uk/t5/Business-Seller-Board/bd-p/21900001545