Sharepoint - UpdateListItem

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SharePoint

Hello,

I`ve got a problem with my Sharepoint 2003 web services. I am trying to add new item into a list via UpdateListItem. Everything is alright but I can`t insert items of the Lookup type. It always gives me error: 0x80020005.

I've checked everything - Lookup value looks something like "ID;#ViewedValue", values are correct.

But I don't know the attributes in the Batch element. Here is the part of XML in this image: http://postimage.org/image/835sv3jm7/

Thank you for your help!