diff --git a/collections/user.yml b/collections/user.yml
index e5766022..669c9484 100644
--- a/collections/user.yml
+++ b/collections/user.yml
@@ -14,6 +14,12 @@ fields:
     type: string
     unique: true
     restriction_mode: B
+  idp_id:
+    type: string
+    minLength: 1
+    unique: true
+    restriction_mode: B
+    description: unique-key from IDP for login
   saml_id:
     type: string
     minLength: 1
diff --git a/dev/sql/schema_relational.sql b/dev/sql/schema_relational.sql
index b0ecac7c..ae7da53d 100644
--- a/dev/sql/schema_relational.sql
+++ b/dev/sql/schema_relational.sql
@@ -2437,6 +2437,9 @@ CREATE TABLE user_t (
         CONSTRAINT unique_user_username UNIQUE,
     member_number varchar(256)
         CONSTRAINT unique_user_member_number UNIQUE,
+    idp_id varchar(256)
+        CONSTRAINT unique_user_idp_id UNIQUE
+        CONSTRAINT minlength_user_idp_id CHECK (char_length(idp_id) >= 1),
     saml_id varchar(256)
         CONSTRAINT unique_user_saml_id UNIQUE
         CONSTRAINT minlength_user_saml_id CHECK (char_length(saml_id) >= 1),
@@ -2470,6 +2473,7 @@ CREATE TABLE user_t (
 
 
 
+comment on column user_t.idp_id is 'unique-key fromIDP for login';
 comment on column user_t.saml_id is 'unique-key from IdP for SAML login';
 comment on column user_t.organization_management_level is 'Hierarchical permission level for the whole organization.';
 
@@ -6287,4 +6291,4 @@ There are 2 errors/warnings
     projection/content: type:JSON is marked as a calculated field and not generated in schema
 */
 
-/*   Missing attribute handling for on_delete, constant_legacy, deferred */
\ No newline at end of file
+/*   Missing attribute handling for on_delete, constant_legacy, deferred */