diff --git a/src/components/constants.ts b/src/components/constants.ts
index 1bf9ba75..957fc85c 100644
--- a/src/components/constants.ts
+++ b/src/components/constants.ts
@@ -6,29 +6,29 @@ import {
 
 // Mapping of purposes to the message translation key
 export const DEFAULT_PURPOSE_TO_MESSAGE_KEY: Record<string, DefinedMessage> = {
-  Essential: completeOptionsMessages.essentialLabel,
-  Functional: completeOptionsMessages.functionalLabel,
-  Analytics: completeOptionsMessages.analyticsLabel,
-  Advertising: completeOptionsMessages.advertisingLabel,
-  SaleOfInfo: completeOptionsMessages.saleOfInfoLabel,
+  Essential: completeOptionsMessages['essential.title'],
+  Functional: completeOptionsMessages['functional.title'],
+  Analytics: completeOptionsMessages['analytics.title'],
+  Advertising: completeOptionsMessages['advertising.title'],
+  SaleOfInfo: completeOptionsMessages['saleOfInfo.title'],
 };
 
 export const DEFAULT_PURPOSE_TO_DESCRIPTION_KEY: Record<
   string,
   DefinedMessage
 > = {
-  Essential: completeOptionsMessages.essentialDescription,
-  Functional: completeOptionsMessages.functionalDescription,
-  Analytics: completeOptionsMessages.analyticsDescription,
-  Advertising: completeOptionsMessages.advertisingDescription,
-  SaleOfInfo: completeOptionsMessages.saleOfInfoDescription,
+  Essential: completeOptionsMessages['essential.description'],
+  Functional: completeOptionsMessages['functional.description'],
+  Analytics: completeOptionsMessages['analytics.description'],
+  Advertising: completeOptionsMessages['advertising.description'],
+  SaleOfInfo: completeOptionsMessages['saleOfInfo.description'],
 }
 
 export const DEFAULT_PURPOSE_TO_INVERTED_MESSAGE_KEY: Record<
   string,
   DefinedMessage
 > = {
-  Essential: completeOptionsMessages.essentialLabel,
+  Essential: completeOptionsMessages['essential.title'],
   Functional: completeOptionsInvertedMessages.functionalLabel,
   Analytics: completeOptionsInvertedMessages.analyticsLabel,
   Advertising: completeOptionsInvertedMessages.advertisingLabel,
diff --git a/src/hooks/useGetPurposeDescriptionKeys.ts b/src/hooks/useGetPurposeDescriptionKeys.ts
index 2c9da719..88710ab0 100644
--- a/src/hooks/useGetPurposeDescriptionKeys.ts
+++ b/src/hooks/useGetPurposeDescriptionKeys.ts
@@ -1,3 +1,5 @@
+import camelCase from 'lodash/camelCase';
+
 import type {
   TrackingPurposeDetails,
   TrackingPurposesTypes,
@@ -10,8 +12,7 @@ import { useMemo } from 'preact/hooks';
 
 import { DefinedMessage } from '@transcend-io/internationalization';
 
-const CUSTOM_PURPOSE_DESCRIPTION_PREFIX = 'cm-ui.purposeDescription';
-const DEFAULT_PURPOSE_DESCRIPTION_PREFIX = 'ui.src.CompleteOptions';
+const PURPOSE_MESSAGE_PREFIX = 'purpose.trackingType';
 
 export const useGetPurposeDescriptionKeys = ({
   consentSelection,
@@ -29,20 +30,7 @@ export const useGetPurposeDescriptionKeys = ({
     () =>
       // the purpose type is unique for the bundle
       Object.keys(consentSelection ?? {}).reduce((allMessages, purposeType) => {
-        if (allMessages[purposeType]) {
-          return allMessages;
-        }
-        const purposeMessageDescriptionId = Object.values(
-          defaultTrackingPurposes,
-        ).find(
-          (defaultPurpose) =>
-            (defaultPurpose as TrackingPurposeDetails).trackingType ===
-            purposeType,
-        )
-          ? `${DEFAULT_PURPOSE_DESCRIPTION_PREFIX}.${purposeType
-              .charAt(0)
-              .toLowerCase()}${purposeType.slice(1)}Description`
-          : `${CUSTOM_PURPOSE_DESCRIPTION_PREFIX}.${purposeType}`;
+        const purposeMessageDescriptionId = `${PURPOSE_MESSAGE_PREFIX}.${camelCase(purposeType)}.description`;
         return {
           ...allMessages,
           [purposeType]: {
diff --git a/src/hooks/useGetPurposeMessageKeys.ts b/src/hooks/useGetPurposeMessageKeys.ts
index 348df3b2..320f3a4a 100644
--- a/src/hooks/useGetPurposeMessageKeys.ts
+++ b/src/hooks/useGetPurposeMessageKeys.ts
@@ -1,10 +1,11 @@
+import camelCase from 'lodash/camelCase';
 import { ConsentSelection } from '../types';
 
 import { useMemo } from 'preact/hooks';
 
 import { DefinedMessage } from '@transcend-io/internationalization';
 
-const CUSTOM_PURPOSE_MESSAGE_PREFIX = 'cm-ui.purpose';
+const PURPOSE_MESSAGE_PREFIX = 'purpose.trackingType';
 
 export const useGetPurposeMessageKeys = ({
   consentSelection,
@@ -19,16 +20,13 @@ export const useGetPurposeMessageKeys = ({
     () =>
       // the purpose type is unique for the bundle
       Object.keys(consentSelection ?? {}).reduce((allMessages, purposeType) => {
-        if (allMessages[purposeType]) {
-          return allMessages;
-        }
-        const customPurposeMessageLabel = `${CUSTOM_PURPOSE_MESSAGE_PREFIX}.${purposeType}`;
+        const purposeMessageLabel = `${PURPOSE_MESSAGE_PREFIX}.${camelCase(purposeType)}.title`;
         return {
           ...allMessages,
           [purposeType]: {
-            id: customPurposeMessageLabel,
+            id: purposeMessageLabel,
             defaultMessage: purposeType,
-            description: `Translatable name for custom purpose '${purposeType}'`,
+            description: `Translatable name for purpose '${purposeType}'`,
           } as DefinedMessage,
         };
       }, defaultPurposeToMessageKey as Record<string, DefinedMessage>),
diff --git a/src/messages.ts b/src/messages.ts
index 8381ac04..dd4ffb98 100644
--- a/src/messages.ts
+++ b/src/messages.ts
@@ -456,57 +456,60 @@ export const bottomMenuMessages = defineMessages('ui.src.bottomMenu', {
   },
 });
 
+export const purposeMessages = defineMessages('purpose.trackingType', {
+  'essential.title': {
+    defaultMessage: 'Essential purposes',
+    description: 'Text for essential purposes in CompleteOptions view state.',
+  },
+  'essential.description': {
+    defaultMessage: 'No consent needed.',
+    description:
+      'Text for essential purposes description in CompleteOptions view state.',
+  },
+  'functional.title': {
+    defaultMessage: 'Functionality',
+    description:
+      'Text for functional purposes in CompleteOptions view state.',
+  },
+  'functional.description': {
+    defaultMessage: 'Personalization, autofilled forms, etc.',
+    description:
+      'Text for functional purposes description in CompleteOptions view state.',
+  },
+  'analytics.title': {
+    defaultMessage: 'Analytics',
+    description: 'Text for analytics purposes in CompleteOptions view state.',
+  },
+  'analytics.description': {
+    defaultMessage: 'Help us learn how our site is used and how it performs.',
+    description:
+      'Text for analytics purposes description in CompleteOptions view state.',
+  },
+  'advertising.title': {
+    defaultMessage: 'Advertising',
+    description:
+      'Text for advertising purposes in CompleteOptions view state.',
+  },
+  'advertising.description': {
+    defaultMessage: 'Helps us and others serve ads relevant to you.',
+    description:
+      'Text for advertising purposes description in CompleteOptions view state.',
+  },
+  'saleOfInfo.title': {
+    defaultMessage: 'Sale of personal information',
+    description:
+      'Text for sale of information purposes in CompleteOptions view state.',
+  },
+  'saleOfInfo.description': {
+    defaultMessage: 'Sale of personal information.',
+    description:
+      'Text for advertising purposes description in CompleteOptions view state.',
+  },
+});
+
 export const completeOptionsMessages = defineMessages(
   'ui.src.completeOptions',
   {
-    essentialLabel: {
-      defaultMessage: 'Essential purposes',
-      description: 'Text for essential purposes in CompleteOptions view state.',
-    },
-    essentialDescription: {
-      defaultMessage: 'No consent needed.',
-      description:
-        'Text for essential purposes description in CompleteOptions view state.',
-    },
-    functionalLabel: {
-      defaultMessage: 'Functionality',
-      description:
-        'Text for functional purposes in CompleteOptions view state.',
-    },
-    functionalDescription: {
-      defaultMessage: 'Personalization, autofilled forms, etc.',
-      description:
-        'Text for functional purposes description in CompleteOptions view state.',
-    },
-    analyticsLabel: {
-      defaultMessage: 'Analytics',
-      description: 'Text for analytics purposes in CompleteOptions view state.',
-    },
-    analyticsDescription: {
-      defaultMessage: 'Help us learn how our site is used and how it performs.',
-      description:
-        'Text for analytics purposes description in CompleteOptions view state.',
-    },
-    advertisingLabel: {
-      defaultMessage: 'Advertising',
-      description:
-        'Text for advertising purposes in CompleteOptions view state.',
-    },
-    advertisingDescription: {
-      defaultMessage: 'Helps us and others serve ads relevant to you.',
-      description:
-        'Text for advertising purposes description in CompleteOptions view state.',
-    },
-    saleOfInfoLabel: {
-      defaultMessage: 'Sale of personal information',
-      description:
-        'Text for sale of information purposes in CompleteOptions view state.',
-    },
-    saleOfInfoDescription: {
-      defaultMessage: 'Sale of personal information.',
-      description:
-        'Text for advertising purposes description in CompleteOptions view state.',
-    },
     saveButtonPrimary: {
       defaultMessage: 'Confirm',
       description: 'Confirm button text in CompleteOptions view state.',