Error 4401 Unable to populate data, please check if mandatory value is entered correctly while inserting a call record in contact

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I am trying to link a call with a contact to log call history. I am using the xml below. But the response is 4401 Unable to populate data

<Calls>  

<row no="1">

<FL val="SMOWNERID">2145559000000117005</FL>

<FL val="Subject">Sales campaign</FL>

<FL val="Call Type">Outbound</FL>

<FL val="Call Purpose">Prospecting</FL>

<FL val="CONTACTID">2145559000000117005</FL>

<FL val="SEID">2145559000000117005</FL>

<FL val="SEMODULE">Contacts</FL>

<FL val="Call Start Time">2016-05-06 11:05:26</FL>

<FL val="Call Duration">1:40</FL>

<FL val="Description">Call for sales of new product</FL>

</row>

</Calls>