Does the REST API support adding/deleting relationships between CIs?

[kevin_leuthold]

I'm wondering if it's possible to add or delete a relationship between configuration items using the REST API. For example, I'd like to add a parent-child relationship between two applications.

[Mike Allen · Accepted solution]

Relationships are held in a table.   All tables have open APIs.   So, theoretically, yes, you can do it.   The table is cmdb_rel_ci, so the open table api would be https://instance.service-now.com/api/now/table/cmdb_rel_ci

[Constantine Kr1]

There is a fairly new alternative way of doing this through the CMDB Instance API (this can be further explored in the REST API Explorer). 

https://docs.servicenow.com/bundle/madrid-application-development/page/integrate/inbound-rest/concep...

Here is an example from Knowledge 18 lab manual using the API:

https://developer.servicenow.com/app.do#!/creatorcon/CCW1127/creatorcon_18_CCW1127_lab_52__delete_re...