ServiceNow SAMPLE REST MESSAGE POST - Service Catalog Cart API - How to Order a Catalog Item on a Remote Instance see Service Catalog API > jump to 'order_now' section Using a REST Message - enter the endpoint in this format: https://dev126222.service-now.com/api/sn_sc/servicecatalog/items/ ${sys_id} /order_now use variable substitution to populate the sys id. Note the sys id corresponds to the catalog item. - add the HTTP Headers: - add the HTTP Content: example: { "sysparm_quantity" : "1" , "sysparm_requested_for" : "ruen.catitem.user" , "variables" :{ "test_variable" : "this is a test 1" , "test_variable_2" : "this is a test 2" } } or here's how you could use variable substitution in the content: { "sysparm_quantity" : "1" , "sysparm_requested_for" : "ruen.catitem.user" , "variables" :{ "test_variabl