Add proviso to SCIM Okta config process

doc/user/group/saml_sso/scim_setup.md

@@ -118,6 +118,7 @@ Once synchronized, changing the field mapped to `id` and `externalId` will likel
 ### Okta configuration steps
 
 The SAML application that was created during [Single sign-on](index.md#okta-setup-notes) setup for [Okta](https://developer.okta.com/docs/guides/saml-application-setup/overview/) now needs to be set up for SCIM.
+Before proceeding, be sure to complete the [GitLab configuration](#gitlab-configuration) process.
 
 1. Sign in to Okta.
 1. If you see an **Admin** button in the top right, click the button. This will