diff --git a/lambdas/print-sender-lambda/src/__tests__/app/print-sender.test.ts b/lambdas/print-sender-lambda/src/__tests__/app/print-sender.test.ts
index 63929896..8f9e71d8 100644
--- a/lambdas/print-sender-lambda/src/__tests__/app/print-sender.test.ts
+++ b/lambdas/print-sender-lambda/src/__tests__/app/print-sender.test.ts
@@ -74,7 +74,7 @@ describe('PrintSender', () => {
               url: mockPDFAnalysed.data.letterUri,
               clientId: mockPDFAnalysed.data.senderId,
               campaignId: 'digitalLetters',
-              letterVariantId: 'notify-digital-letter-standard',
+              letterVariantId: 'notify-digital-letters-standard',
             }),
           }),
         ]),
diff --git a/lambdas/print-sender-lambda/src/app/print-sender.ts b/lambdas/print-sender-lambda/src/app/print-sender.ts
index 5772d5cd..188f538d 100644
--- a/lambdas/print-sender-lambda/src/app/print-sender.ts
+++ b/lambdas/print-sender-lambda/src/app/print-sender.ts
@@ -47,7 +47,7 @@ export class PrintSender {
           url: item.data.letterUri,
           clientId: item.data.senderId,
           campaignId: 'digitalLetters',
-          letterVariantId: 'notify-digital-letter-standard',
+          letterVariantId: 'notify-digital-letters-standard',
         },
       };
 
diff --git a/lambdas/print-status-handler/package.json b/lambdas/print-status-handler/package.json
index fbdf48ec..5db2c2d8 100644
--- a/lambdas/print-status-handler/package.json
+++ b/lambdas/print-status-handler/package.json
@@ -1,6 +1,6 @@
 {
   "dependencies": {
-    "@nhsdigital/nhs-notify-event-schemas-supplier-api": "1.0.11",
+    "@nhsdigital/nhs-notify-event-schemas-supplier-api": "1.0.17",
     "digital-letters-events": "^0.0.1",
     "utils": "^0.0.1",
     "zod": "^4.1.12"
diff --git a/lambdas/print-status-handler/src/__tests__/apis/sqs-handler.test.ts b/lambdas/print-status-handler/src/__tests__/apis/sqs-handler.test.ts
index bb6df053..34100f8c 100644
--- a/lambdas/print-status-handler/src/__tests__/apis/sqs-handler.test.ts
+++ b/lambdas/print-status-handler/src/__tests__/apis/sqs-handler.test.ts
@@ -46,6 +46,8 @@ describe('SQS Handler', () => {
             type: 'uk.nhs.notify.digital.letters.print.letter.transitioned.v1',
             source:
               '/nhs/england/notify/production/primary/data-plane/digitalletters/print',
+            subject:
+              'client/f47ac10b-58cc-4372-a567-0e02b2c3d479/letter-request/2503cbd5-6722-4e90-9fbd-5f1e96d65c22',
             data: {
               senderId: acceptedLetterEvent.data.origin.subject.split('/')[1],
               messageReference:
@@ -83,6 +85,8 @@ describe('SQS Handler', () => {
             type: 'uk.nhs.notify.digital.letters.print.letter.transitioned.v1',
             source:
               '/nhs/england/notify/production/primary/data-plane/digitalletters/print',
+            subject:
+              'client/f47ac10b-58cc-4372-a567-0e02b2c3d480/letter-request/2503cbd5-6722-4e90-9fbd-5f1e96d65c22',
             data: {
               senderId: failedLetterEvent.data.origin.subject.split('/')[1],
               messageReference:
@@ -220,7 +224,7 @@ describe('SQS Handler', () => {
           issues: expect.arrayContaining([
             expect.objectContaining({
               message:
-                'Subject must be in format: client/{senderId}/digital-letters/{messageReference}',
+                'Subject must be in format: client/{senderId}/letter-request/{messageReference}',
             }),
           ]),
         }),
diff --git a/lambdas/print-status-handler/src/__tests__/test-data.ts b/lambdas/print-status-handler/src/__tests__/test-data.ts
index abfff8e4..d950876c 100644
--- a/lambdas/print-status-handler/src/__tests__/test-data.ts
+++ b/lambdas/print-status-handler/src/__tests__/test-data.ts
@@ -6,11 +6,11 @@ export const acceptedLetterEvent = {
   specversion: '1.0',
   source: '/data-plane/supplier-api/prod/update-status',
   subject:
-    'letter-origin/digital-letters/letter/f47ac10b-58cc-4372-a567-0e02b2c3d479',
+    'letter-origin/digital-letters/letter/f47ac10b-58cc-4372-a567-0e02b2c3d479_2503cbd5-6722-4e90-9fbd-5f1e96d65c22',
   type: 'uk.nhs.notify.supplier-api.letter.ACCEPTED.v1',
   dataschema:
-    'https://notify.nhs.uk/cloudevents/schemas/supplier-api/letter.ACCEPTED.1.0.0.schema.json',
-  dataschemaversion: '1.0.0',
+    'https://notify.nhs.uk/cloudevents/schemas/supplier-api/letter.ACCEPTED.1.0.17.schema.json',
+  dataschemaversion: '1.0.17',
   time: '2023-06-20T12:00:00Z',
   recordedtime: '2023-06-20T12:00:00.250Z',
   severitynumber: 2,
@@ -19,19 +19,20 @@ export const acceptedLetterEvent = {
   severitytext: 'INFO',
   plane: 'data',
   data: {
-    domainId: 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
+    domainId:
+      'f47ac10b-58cc-4372-a567-0e02b2c3d479_2503cbd5-6722-4e90-9fbd-5f1e96d65c22',
     groupId: 'client_template',
+    specificationId: '1y3q9v1zzzz',
+    supplierId: 'supplier-1',
+    status: 'ACCEPTED',
+    billingRef: '1y3q9v1zzzz',
     origin: {
       domain: 'letter-rendering',
       event: 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
       source: '/data-plane/letter-rendering/prod/render-pdf',
       subject:
-        'client/00f3b388-bbe9-41c9-9e76-052d37ee8988/digital-letters/b9c0c7f8-8204-400d-8348-7e7ddf775dae',
+        'client/f47ac10b-58cc-4372-a567-0e02b2c3d479/letter-request/2503cbd5-6722-4e90-9fbd-5f1e96d65c22',
     },
-    specificationId: '1y3q9v1zzzz',
-    supplierId: 'supplier-1',
-    status: 'ACCEPTED',
-    billingRef: '1y3q9v1zzzz',
   },
 } as LetterEvent;
 
@@ -40,11 +41,11 @@ export const failedLetterEvent = {
   specversion: '1.0',
   source: '/data-plane/supplier-api/prod/update-status',
   subject:
-    'letter-origin/digital-letters/letter/f47ac10b-58cc-4372-a567-0e02b2c3d480',
+    'letter-origin/digital-letters/letter/f47ac10b-58cc-4372-a567-0e02b2c3d480_2503cbd5-6722-4e90-9fbd-5f1e96d65c22',
   type: 'uk.nhs.notify.supplier-api.letter.FAILED.v1',
   dataschema:
-    'https://notify.nhs.uk/cloudevents/schemas/supplier-api/letter.FAILED.1.0.0.schema.json',
-  dataschemaversion: '1.0.0',
+    'https://notify.nhs.uk/cloudevents/schemas/supplier-api/letter.FAILED.1.0.17.schema.json',
+  dataschemaversion: '1.0.17',
   time: '2023-06-20T13:00:00Z',
   recordedtime: '2023-06-20T13:00:00.250Z',
   severitynumber: 3,
@@ -53,21 +54,22 @@ export const failedLetterEvent = {
   severitytext: 'WARN',
   plane: 'data',
   data: {
-    domainId: 'f47ac10b-58cc-4372-a567-0e02b2c3d480',
+    domainId:
+      'f47ac10b-58cc-4372-a567-0e02b2c3d480_2503cbd5-6722-4e90-9fbd-5f1e96d65c22',
     groupId: 'client_template',
-    origin: {
-      domain: 'letter-rendering',
-      event: 'f47ac10b-58cc-4372-a567-0e02b2c3d480',
-      source: '/data-plane/letter-rendering/prod/render-pdf',
-      subject:
-        'client/00f3b388-bbe9-41c9-9e76-052d37ee8988/digital-letters/c8d1d8g9-9305-511e-9459-8f8eeg886ebf',
-    },
     specificationId: '1y3q9v1zzzz',
     supplierId: 'supplier-1',
     status: 'FAILED',
     billingRef: '1y3q9v1zzzz',
     reasonCode: 'FAILURE001',
     reasonText: 'Letter has too many pages',
+    origin: {
+      domain: 'letter-rendering',
+      event: 'f47ac10b-58cc-4372-a567-0e02b2c3d480',
+      source: '/data-plane/letter-rendering/prod/render-pdf',
+      subject:
+        'client/f47ac10b-58cc-4372-a567-0e02b2c3d480/letter-request/2503cbd5-6722-4e90-9fbd-5f1e96d65c22',
+    },
   },
 } as LetterEvent;
 
diff --git a/lambdas/print-status-handler/src/apis/sqs-handler.ts b/lambdas/print-status-handler/src/apis/sqs-handler.ts
index d75d7a67..9d599c9f 100644
--- a/lambdas/print-status-handler/src/apis/sqs-handler.ts
+++ b/lambdas/print-status-handler/src/apis/sqs-handler.ts
@@ -28,8 +28,8 @@ type ValidatedRecord = {
 const originSubjectSchema = z
   .string()
   .regex(
-    /^client\/[^/]+\/digital-letters\/[^/]+$/,
-    'Subject must be in format: client/{senderId}/digital-letters/{messageReference}',
+    /^client\/[^/]+\/letter-request\/[^/]+$/,
+    'Subject must be in format: client/{senderId}/letter-request/{messageReference}',
   );
 
 function validateRecord(
@@ -68,6 +68,12 @@ function validateRecord(
       return null;
     }
 
+    logger.info({
+      description: 'Successfully validated SQS record',
+      messageId,
+      subject: item.data.origin.subject,
+    });
+
     return { messageId, event: item };
   } catch (error) {
     logger.warn({
@@ -102,6 +108,7 @@ function generateUpdatedEvent(event: LetterEvent): PrintLetterTransitioned {
     id: randomUUID(),
     time: eventTime,
     recordedtime: eventTime,
+    subject: `client/${senderId}/letter-request/${messageReference}`,
     dataschema:
       'https://notify.nhs.uk/cloudevents/schemas/digital-letters/2025-10-draft/data/digital-letters-print-letter-transitioned-data.schema.json',
     type: 'uk.nhs.notify.digital.letters.print.letter.transitioned.v1',
diff --git a/package-lock.json b/package-lock.json
index adf6ab2d..fc0276ee 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2737,7 +2737,7 @@
       "name": "nhs-notify-digital-letters-print-status-handler",
       "version": "0.0.1",
       "dependencies": {
-        "@nhsdigital/nhs-notify-event-schemas-supplier-api": "1.0.11",
+        "@nhsdigital/nhs-notify-event-schemas-supplier-api": "1.0.17",
         "digital-letters-events": "^0.0.1",
         "utils": "^0.0.1",
         "zod": "^4.1.12"
@@ -9391,9 +9391,9 @@
       }
     },
     "node_modules/@nhsdigital/nhs-notify-event-schemas-supplier-api": {
-      "version": "1.0.11",
-      "resolved": "https://npm.pkg.github.com/download/@nhsdigital/nhs-notify-event-schemas-supplier-api/1.0.11/0893c5f6aecfcb8d1562188d30c718acd7dc5637",
-      "integrity": "sha512-1sFPv1f6O5uRvsVxkwd0IVjDsn6l4YqLMCbHduAwnzhObTacQQEI5eB1LGFBQwhvI4q6P1k6FZI0KdDavDd6Iw==",
+      "version": "1.0.17",
+      "resolved": "https://npm.pkg.github.com/download/@nhsdigital/nhs-notify-event-schemas-supplier-api/1.0.17/05b451c993a18b89f4a91922a7affc1d23c1e2a8",
+      "integrity": "sha512-QDWOasKri3iky7StzWdrkV0YIQMnPJNlG4tQZoCOG8BTtAuMte/Xh5vZpQFm1DHQJxUVWMYrAL6n9ZSrKNxVkQ==",
       "license": "MIT",
       "dependencies": {
         "@asyncapi/bundler": "^0.6.4",
@@ -22756,7 +22756,7 @@
         "@aws-sdk/lib-dynamodb": "^3.900.0",
         "@aws-sdk/util-dynamodb": "^3.933.0",
         "@faker-js/faker": "^9.6.0",
-        "@nhsdigital/nhs-notify-event-schemas-supplier-api": "1.0.11",
+        "@nhsdigital/nhs-notify-event-schemas-supplier-api": "1.0.17",
         "@playwright/test": "^1.51.1",
         "csv-parse": "^6.1.0",
         "digital-letters-events": "^0.0.1",
diff --git a/tests/playwright/digital-letters-component-tests/print-status-handler.component.spec.ts b/tests/playwright/digital-letters-component-tests/print-status-handler.component.spec.ts
index 27ca4c44..d6b01338 100644
--- a/tests/playwright/digital-letters-component-tests/print-status-handler.component.spec.ts
+++ b/tests/playwright/digital-letters-component-tests/print-status-handler.component.spec.ts
@@ -15,9 +15,7 @@ const baseLetterEvent = {
   id: '550e8400-e29b-41d4-a716-446655440001',
   specversion: '1.0',
   source: '/data-plane/supplier-api/prod/update-status',
-  subject:
-    'letter-origin/digital-letters/letter/f47ac10b-58cc-4372-a567-0e02b2c3d479',
-  dataschemaversion: '1.0.0',
+  dataschemaversion: '1.0.17',
   time: '2023-06-20T12:00:00Z',
   recordedtime: '2023-06-20T12:00:00.250Z',
   severitynumber: 2,
@@ -26,16 +24,17 @@ const baseLetterEvent = {
   severitytext: 'INFO',
   plane: 'data',
   data: {
-    domainId: 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
+    domainId:
+      '00f3b388-bbe9-41c9-9e76-052d37ee8988_2503cbd5-6722-4e90-9fbd-5f1e96d65c22',
     groupId: 'client_template',
+    specificationId: '1y3q9v1zzzz',
+    supplierId: 'supplier-1',
+    billingRef: '1y3q9v1zzzz',
     origin: {
       domain: 'letter-rendering',
       event: 'f47ac10b-58cc-4372-a567-0e02b2c3d479',
       source: '/data-plane/letter-rendering/prod/render-pdf',
     },
-    specificationId: '1y3q9v1zzzz',
-    supplierId: 'supplier-1',
-    billingRef: '1y3q9v1zzzz',
   },
 } as LetterEvent;
 
@@ -64,14 +63,15 @@ test.describe('Print status handler', () => {
       const messageReference = uuidv4();
       const letterEvent = {
         ...baseLetterEvent,
+        subject: `letter-origin/letter-rendering/letter/00f3b388-bbe9-41c9-9e76-052d37ee8988_${messageReference}`,
         type: `uk.nhs.notify.supplier-api.letter.${status}.v1`,
-        dataschema: `https://notify.nhs.uk/cloudevents/schemas/supplier-api/letter.${status}.1.0.0.schema.json`,
+        dataschema: `https://notify.nhs.uk/cloudevents/schemas/supplier-api/letter.${status}.1.0.17.schema.json`,
         data: {
           ...baseLetterEvent.data,
           status,
           origin: {
             ...baseLetterEvent.data.origin,
-            subject: `client/00f3b388-bbe9-41c9-9e76-052d37ee8988/digital-letters/${messageReference}`,
+            subject: `client/00f3b388-bbe9-41c9-9e76-052d37ee8988/letter-request/${messageReference}`,
           },
         },
       };
@@ -104,13 +104,14 @@ test.describe('Print status handler', () => {
       [
         {
           ...baseLetterEvent,
+          subject: `letter-origin/letter-rendering/letter/00f3b388-bbe9-41c9-9e76-052d37ee8988_${messageReference}`,
           type: `uk.nhs.notify.supplier-api.letter.ACCEPTED.v1`,
           dataschema: `https://notify.nhs.uk/cloudevents/schemas/supplier-api/letter.ACCEPTED.1.0.0.schema.json`,
           data: {
             ...baseLetterEvent.data,
             origin: {
               ...baseLetterEvent.data.origin,
-              subject: `client/00f3b388-bbe9-41c9-9e76-052d37ee8988/digital-letters/${messageReference}`,
+              subject: `client/00f3b388-bbe9-41c9-9e76-052d37ee8988/letter-request/${messageReference}`,
             },
           },
         },
diff --git a/tests/playwright/package.json b/tests/playwright/package.json
index f9cd899a..7ebede52 100644
--- a/tests/playwright/package.json
+++ b/tests/playwright/package.json
@@ -10,7 +10,7 @@
     "@aws-sdk/lib-dynamodb": "^3.900.0",
     "@aws-sdk/util-dynamodb": "^3.933.0",
     "@faker-js/faker": "^9.6.0",
-    "@nhsdigital/nhs-notify-event-schemas-supplier-api": "1.0.11",
+    "@nhsdigital/nhs-notify-event-schemas-supplier-api": "1.0.17",
     "@playwright/test": "^1.51.1",
     "csv-parse": "^6.1.0",
     "digital-letters-events": "^0.0.1",