diff --git a/lib/cocina/models/request_dro.rb b/lib/cocina/models/request_dro.rb
index a355df07..3cf411a3 100644
--- a/lib/cocina/models/request_dro.rb
+++ b/lib/cocina/models/request_dro.rb
@@ -28,7 +28,7 @@ class RequestDRO < Struct
       attribute :access, DROAccess.optional.meta(omittable: true)
       attribute :administrative, Administrative.optional.meta(omittable: true)
       attribute :description, Description.optional.meta(omittable: true)
-      attribute :identification, Identification.optional.meta(omittable: true)
+      attribute(:identification, RequestIdentification.default { RequestIdentification.new })
       attribute :structural, RequestDROStructural.optional.meta(omittable: true)
       attribute :geographic, Geographic.optional.meta(omittable: true)
 
diff --git a/lib/cocina/models/request_identification.rb b/lib/cocina/models/request_identification.rb
new file mode 100644
index 00000000..0b3893f5
--- /dev/null
+++ b/lib/cocina/models/request_identification.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module Cocina
+  module Models
+    class RequestIdentification < Struct
+      # example: sul:PC0170_s3_Fiesta_Bowl_2012-01-02_210609_2026
+      attribute :sourceId, Types::Strict::String
+      attribute :catalogLinks, Types::Strict::Array.of(CatalogLink).meta(omittable: true)
+    end
+  end
+end
diff --git a/openapi.yml b/openapi.yml
index b6d45a92..3fbf36d6 100644
--- a/openapi.yml
+++ b/openapi.yml
@@ -597,7 +597,6 @@ components:
               type: array
               items:
                 $ref: "#/components/schemas/DescriptiveValue"
-
     File:
       description: Binaries that are the basis of what our domain manages. Binaries here do not include metadata files generated for the domain's own management purposes.
       type: object
@@ -861,7 +860,7 @@ components:
         description:
           $ref: '#/components/schemas/Description'
         identification:
-          $ref: '#/components/schemas/Identification'
+          $ref: '#/components/schemas/RequestIdentification'
         structural:
           $ref: '#/components/schemas/RequestDROStructural'
         geographic:
@@ -870,6 +869,7 @@ components:
         - label
         - type
         - version
+        - identification
     RequestDROStructural:
       description: Structural metadata
       type: object
@@ -955,6 +955,20 @@ components:
           type: array
           items:
             $ref: '#/components/schemas/RequestFile'
+    RequestIdentification:
+      description: Same as a Identification, but requires a sourceId.
+      type: object
+      additionalProperties: false
+      properties:
+        sourceId:
+          type: string
+          example: 'sul:PC0170_s3_Fiesta_Bowl_2012-01-02_210609_2026'
+        catalogLinks:
+          type: array
+          items:
+            $ref: '#/components/schemas/CatalogLink'
+      required:
+        - sourceId
     Sequence:
       description: A sequence or ordering of resources within a Collection or Object.
       type: object
diff --git a/spec/cocina/generator/schema_value_spec.rb b/spec/cocina/generator/schema_value_spec.rb
index 4b065e37..bfeefd99 100644
--- a/spec/cocina/generator/schema_value_spec.rb
+++ b/spec/cocina/generator/schema_value_spec.rb
@@ -11,7 +11,8 @@
       Cocina::Models::RequestDRO.new({
                                        label: 'The Prince',
                                        type: Cocina::Models::Vocab.book,
-                                       version: 5
+                                       version: 5,
+                                       identification: { sourceId: 'sul:123' }
                                      }, false, false)
     end
 
@@ -26,7 +27,8 @@
       Cocina::Models::RequestDRO.new({
                                        label: 'The Blue and Brown Books',
                                        type: Cocina::Models::Vocab.book,
-                                       version: 5
+                                       version: 5,
+                                       identification: { sourceId: 'sul:123' }
                                      }, false, false)
     end
 
diff --git a/spec/cocina/models_spec.rb b/spec/cocina/models_spec.rb
index 894f3dee..23ae01e6 100644
--- a/spec/cocina/models_spec.rb
+++ b/spec/cocina/models_spec.rb
@@ -111,7 +111,8 @@
           'type' => 'http://cocina.sul.stanford.edu/models/image.jsonld',
           'label' => 'bar',
           'version' => 5,
-          'access' => {}
+          'access' => {},
+          'identification' => { 'sourceId' => 'sul:123' }
         }
       end