diff --git a/addons/api/addon/models/account.js b/addons/api/addon/models/account.js
index 71b337f44..ff6b9d583 100644
--- a/addons/api/addon/models/account.js
+++ b/addons/api/addon/models/account.js
@@ -4,6 +4,13 @@ import { computed } from '@ember/object';
 
 export default class AccountModel extends GeneratedAccountModel {
 
+  // =properties
+
+  /**
+   * Account resource is nested within auth methods.
+   */
+  nestedResource = true;
+
   // =attributes
 
   /**
diff --git a/addons/api/addon/models/host-set.js b/addons/api/addon/models/host-set.js
index 61033dd79..6b4587ce6 100644
--- a/addons/api/addon/models/host-set.js
+++ b/addons/api/addon/models/host-set.js
@@ -2,6 +2,14 @@ import GeneratedHostSetModel from '../generated/models/host-set';
 import { fragmentArray } from 'ember-data-model-fragments/attributes';
 
 export default class HostSetModel extends GeneratedHostSetModel {
+
+  // =properties
+
+  /**
+   * Account resource is nested within auth methods.
+   */
+  nestedResource = true;
+
   // =attributes
 
   /**
diff --git a/addons/api/addon/models/host.js b/addons/api/addon/models/host.js
index 7748e023b..2b6957dc2 100644
--- a/addons/api/addon/models/host.js
+++ b/addons/api/addon/models/host.js
@@ -2,6 +2,14 @@ import GeneratedHostModel from '../generated/models/host';
 import { fragment } from 'ember-data-model-fragments/attributes';
 
 export default class HostModel extends GeneratedHostModel {
+
+  // =properties
+
+  /**
+   * Account resource is nested within auth methods.
+   */
+  nestedResource = true;
+
   /**
    * Attributes of this resource, if any, represented as a JSON fragment.
    * @type {FragmentHostAttributesModel}
diff --git a/addons/api/addon/serializers/application.js b/addons/api/addon/serializers/application.js
index a41c97730..cdbd2b56d 100644
--- a/addons/api/addon/serializers/application.js
+++ b/addons/api/addon/serializers/application.js
@@ -70,9 +70,11 @@ export default class ApplicationSerializer extends RESTSerializer {
     const serialized = super.serialize(...arguments);
     // Delete `scope` field
     delete serialized.scope;
-    // And serialize `scope_id`
-    const scope_id = snapshot?.attr('scope')?.attr('scope_id');
-    if (scope_id) serialized.scope_id = scope_id;
+    // And serialize `scope_id` when not a nested resource
+    if(!snapshot?.record?.nestedResource) {
+      const scope_id = snapshot?.attr('scope')?.attr('scope_id');
+      if (scope_id) serialized.scope_id = scope_id;
+    }
     return serialized;
   }
 
diff --git a/addons/api/tests/unit/serializers/application-test.js b/addons/api/tests/unit/serializers/application-test.js
index 3ab733e52..85702eac4 100644
--- a/addons/api/tests/unit/serializers/application-test.js
+++ b/addons/api/tests/unit/serializers/application-test.js
@@ -49,6 +49,21 @@ module('Unit | Serializer | application', function (hooks) {
     });
   });
 
+  test('it does not serialize scope_id when resource is nested', function (assert) {
+    assert.expect(1);
+    const store = this.owner.lookup('service:store');
+    const record = store.createRecord('account', {
+      name: 'Account',
+      description: 'Description',
+      scope: {
+        scope_id: 'global',
+        type: 'global',
+      },
+    });
+    const serializedRecord = record.serialize();
+    assert.notOk(serializedRecord.scope_id);
+  });
+
   test('it serializes non-nullish version fields', function (assert) {
     assert.expect(2);
     const store = this.owner.lookup('service:store');