Service Catalog API (Application programming interface) Allows you to use Service Catalog via REST (REpresentational State Transfer) only for OOB (Out of box) fields and it will not capture the custom fields.SummaryThe custom field in the "item_option_new" Table and its value will not fetched when you raise a request from the REST API call. System Navigator -> "Rest API" under system web services module. Name Space: sn_sc API Name: service catalog API Related links: specific catalog item(GET) - Provide the Sys_id of the catalog item in the sys_id column and it will be populated only if you click on 'specific catalog item(GET)' - Observe the output in the response by scrolling down to the page where it captures only OOB fields.