From 08eb612cb2b8784e2d25a58d80b38acf011a5c2f Mon Sep 17 00:00:00 2001
From: Jez Barnsley <jbarnsley.github@gmail.com>
Date: Wed, 21 Jan 2026 16:55:00 +0000
Subject: [PATCH] Fixed ref-num being double-generated

---
 .../plugins/engine/pageControllers/StatusPageController.ts     | 2 +-
 .../plugins/engine/pageControllers/SummaryPageController.ts    | 3 ++-
 src/server/plugins/engine/types.ts                             | 1 +
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/server/plugins/engine/pageControllers/StatusPageController.ts b/src/server/plugins/engine/pageControllers/StatusPageController.ts
index 410973d0a..fddee7f67 100644
--- a/src/server/plugins/engine/pageControllers/StatusPageController.ts
+++ b/src/server/plugins/engine/pageControllers/StatusPageController.ts
@@ -58,7 +58,7 @@ export class StatusPageController extends QuestionPageController {
         submissionGuidance,
         formName,
         showReferenceNumber: this.showReferenceNumber,
-        referenceNumber: context.referenceNumber
+        referenceNumber: confirmationState.referenceNumber
       })
     }
   }
diff --git a/src/server/plugins/engine/pageControllers/SummaryPageController.ts b/src/server/plugins/engine/pageControllers/SummaryPageController.ts
index 8507b9731..d97f54631 100644
--- a/src/server/plugins/engine/pageControllers/SummaryPageController.ts
+++ b/src/server/plugins/engine/pageControllers/SummaryPageController.ts
@@ -174,7 +174,8 @@ export class SummaryPageController extends QuestionPageController {
 
     await cacheService.setConfirmationState(request, {
       confirmed: true,
-      formId: context.state.formId
+      formId: context.state.formId,
+      referenceNumber: context.referenceNumber
     } as FormConfirmationState)
 
     // Clear all form data
diff --git a/src/server/plugins/engine/types.ts b/src/server/plugins/engine/types.ts
index 447a5b1db..860469605 100644
--- a/src/server/plugins/engine/types.ts
+++ b/src/server/plugins/engine/types.ts
@@ -100,6 +100,7 @@ export interface FormSubmissionError
 export interface FormConfirmationState {
   confirmed?: true
   formId?: string
+  referenceNumber?: string
 }
 
 export interface FormPayloadParams {