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Service Catalog Client Scripting: form sys id's

UPDATED JUNE2020 (New York Version

in case below don't work, try
    g_form.getParameter('sysparm_item_guid');


//--Cat item id:

gel('sysparm_id').value;

//--Actual form id:
gel('sysparm_item_guid').value);


and for Service Portal friendly versions:

//--Cat item id:
itemID= g_form.getSysId();


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