diff --git a/app/graphql/types/input/reference_value_input_type.rb b/app/graphql/types/input/reference_value_input_type.rb
index ef0fcaac..073bd40f 100644
--- a/app/graphql/types/input/reference_value_input_type.rb
+++ b/app/graphql/types/input/reference_value_input_type.rb
@@ -20,6 +20,10 @@ class ReferenceValueInputType < Types::BaseInputObject
       argument :input_index, GraphQL::Types::Int,
                required: false,
                description: 'The index of the referenced input'
+
+      argument :input_type_identifier, GraphQL::Types::String,
+               required: false,
+               description: 'The identifier of the input type'
     end
   end
 end
diff --git a/app/graphql/types/reference_value_type.rb b/app/graphql/types/reference_value_type.rb
index 89ad4376..c09dac0f 100644
--- a/app/graphql/types/reference_value_type.rb
+++ b/app/graphql/types/reference_value_type.rb
@@ -21,6 +21,12 @@ class ReferenceValueType < Types::BaseObject
           null: true,
           description: 'The index of the referenced input'
 
+    # rubocop:disable GraphQL/ExtractType
+    field :input_type_identifier, GraphQL::Types::String,
+          null: true,
+          description: 'The identifier of the input type'
+    # rubocop:enable GraphQL/ExtractType
+
     id_field ReferenceValue
     timestamps
 
diff --git a/app/services/namespaces/projects/flows/update_service.rb b/app/services/namespaces/projects/flows/update_service.rb
index bf053af9..634313e8 100644
--- a/app/services/namespaces/projects/flows/update_service.rb
+++ b/app/services/namespaces/projects/flows/update_service.rb
@@ -231,7 +231,8 @@ def update_node_parameters(t, current_node, current_node_input, all_nodes)
                 node_function: referenced_node[:node],
                 reference_paths: reference_paths,
                 parameter_index: parameter.value.reference_value.parameter_index,
-                input_index: parameter.value.reference_value.input_index
+                input_index: parameter.value.reference_value.input_index,
+                input_type_identifier: parameter.value.reference_value.input_type_identifier
               )
             else
               db_parameters[index].reference_value&.destroy
diff --git a/db/migrate/20260404122243_add_input_type_identifier_to_reference_value.rb b/db/migrate/20260404122243_add_input_type_identifier_to_reference_value.rb
new file mode 100644
index 00000000..96dfe61e
--- /dev/null
+++ b/db/migrate/20260404122243_add_input_type_identifier_to_reference_value.rb
@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddInputTypeIdentifierToReferenceValue < Code0::ZeroTrack::Database::Migration[1.0]
+  def change
+    add_column :reference_values, :input_type_identifier, :text
+  end
+end
diff --git a/db/schema_migrations/20260404122243 b/db/schema_migrations/20260404122243
new file mode 100644
index 00000000..7f15ab21
--- /dev/null
+++ b/db/schema_migrations/20260404122243
@@ -0,0 +1 @@
+49318d6907f86c2cec72df175314b6afdee6bc1a8cdc6edfa34f8c1a6c4908e1
\ No newline at end of file
diff --git a/db/structure.sql b/db/structure.sql
index 9ba1ed98..85f5e285 100644
--- a/db/structure.sql
+++ b/db/structure.sql
@@ -670,6 +670,7 @@ CREATE TABLE reference_values (
     node_function_id bigint,
     parameter_index integer,
     input_index integer,
+    input_type_identifier text,
     CONSTRAINT check_a2e3734389 CHECK ((num_nonnulls(parameter_index, input_index) = ANY (ARRAY[0, 2])))
 );
 
diff --git a/docs/graphql/input_object/referencevalueinput.md b/docs/graphql/input_object/referencevalueinput.md
index ed532bd2..6e2c40ff 100644
--- a/docs/graphql/input_object/referencevalueinput.md
+++ b/docs/graphql/input_object/referencevalueinput.md
@@ -9,6 +9,7 @@ Input type for reference value
 | Name | Type | Description |
 |------|------|-------------|
 | `inputIndex` | [`Int`](../scalar/int.md) | The index of the referenced input |
+| `inputTypeIdentifier` | [`String`](../scalar/string.md) | The identifier of the input type |
 | `nodeFunctionId` | [`NodeFunctionID`](../scalar/nodefunctionid.md) | The referenced value unless referencing the flow input |
 | `parameterIndex` | [`Int`](../scalar/int.md) | The index of the referenced parameter |
 | `referencePath` | [`[ReferencePathInput!]!`](../input_object/referencepathinput.md) | The paths associated with this reference value |
diff --git a/docs/graphql/object/referencevalue.md b/docs/graphql/object/referencevalue.md
index 24b8b549..8487fbbf 100644
--- a/docs/graphql/object/referencevalue.md
+++ b/docs/graphql/object/referencevalue.md
@@ -11,6 +11,7 @@ Represents a reference value in the system.
 | `createdAt` | [`Time!`](../scalar/time.md) | Time when this ReferenceValue was created |
 | `id` | [`ReferenceValueID!`](../scalar/referencevalueid.md) | Global ID of this ReferenceValue |
 | `inputIndex` | [`Int`](../scalar/int.md) | The index of the referenced input |
+| `inputTypeIdentifier` | [`String`](../scalar/string.md) | The identifier of the input type |
 | `nodeFunctionId` | [`NodeFunctionID`](../scalar/nodefunctionid.md) | The referenced value unless referencing the flow input. |
 | `parameterIndex` | [`Int`](../scalar/int.md) | The index of the referenced parameter |
 | `referencePath` | [`[ReferencePath!]!`](../object/referencepath.md) | The paths associated with this reference value. |
diff --git a/spec/factories/reference_values.rb b/spec/factories/reference_values.rb
index 5b42a9e8..fbfc2eda 100644
--- a/spec/factories/reference_values.rb
+++ b/spec/factories/reference_values.rb
@@ -5,5 +5,6 @@
     node_function
     parameter_index { nil }
     input_index { nil }
+    input_type_identifier { nil }
   end
 end