Update management_interface_v2.md
Artifact_id is required when modifying the API using V2.
diff --git a/doc/v2/management_interface_v2.md b/doc/v2/management_interface_v2.md
index b81ec6f..31ab76b 100644
--- a/doc/v2/management_interface_v2.md
+++ b/doc/v2/management_interface_v2.md
@@ -163,10 +163,11 @@
Once you have created your API, you can invoke this API by concatenating the `managed_url` with a path specified in your OpenAPI doc.
-### PUT /v2/{tenant_id}/apis
+### PUT /v2/{tenant_id}/apis/{artifact_id}
Update an existing managed API.
* `tenant_id`: *(string) the tenant associated with this API
+* `artifact_id`: *(string) the id associated with this API
* The body is a JSON object that represents this API's [OpenAPI 2.0 spec](http://swagger.io/specification/), as decribed above
_returns:_
