The CSV data is like below
assetPath,dc:title{{String}},dc:assetType{{String}},dc:multiselect{{String:multi}},dc:number{{Number}},dc:archiveDate{{Date}}
/content/dam/demo/helpicon.PNG,Adapt,Product,"Product,Non-Product",100,2018-04-12T09:45:54+02:00
/content/dam/demo/Icon_JEXA_3.png,JEXA,Product,"Product,Non-Product",100,2018-04-12T09:45:54+02:00