diff --git a/guides/identity/required-details.mdx b/guides/identity/required-details.mdx
index 99672dc..885e4c9 100644
--- a/guides/identity/required-details.mdx
+++ b/guides/identity/required-details.mdx
@@ -41,6 +41,9 @@ licensing arrangement and solution. See the table below:
 | `cdd.source_of_funds`            |                                --                                 |
 | `cdd.purpose_of_account`         |                                --                                 |
 
+**Notes:**
+- For US Residents: `cip_id_type` must be set to `SSN` or `ITIN`.
+
 ## Required Institution Details
 
 Institution identities are used to represent all non-person entities. Details for institution identity type are recorded in `institution_details`. An institution identity also has `institution_members` associated with it. These define persons that have some relationship to the institution.