Error updating Items using DI Server API

Hello.

I am trying to update Items record using DI Server API and I receive an error (ODBC -2028 record not found).

XML reques

<?xml version="1.0" encoding="UTF-16"?>

-<env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">

-<env:Header>

<SessionID>0AF734DD-0153-4959-815C-F04593FA3E16</SessionID>

</env:Header>

-<env:Body>

-<dis:Update xmlns:dis="http://www.sap.com/SBO/DIS">

<Service>ItemsService</Service>

-<Item>

<ItemCode>APZU3589085</ItemCode>

<ItemName/>

<Manufacturer>-1</Manufacturer>

<ItemsGroupCode>103</ItemsGroupCode>

</Item>

</dis:Update>

</env:Body>

</env:Envelope>

Please help me to solve the issue.

Regards,

Pawel