I faced with a problem when I want to create an Item through Item API. I tried these methods:
  • createItem (String itemTypeId, HashMap fieldValues)
  • createItem (String itemTypeId, String ownerCustomerId, HashMap fieldValues)

In both ways I get an unsuccessful creation with details (response body):
<key xsi:type="soapenc:string">success</key>
<value xsi:type="soapenc:string">false</value>
<key xsi:type="soapenc:string">message</key>
<value xsi:type="soapenc:string">An error occurred whilst retrieving the item type list: null</value>

Thank you!