diff --git a/pages/alert/permutations.page.tsx b/pages/alert/permutations.page.tsx
index 821d8d5550..e19e2d52da 100644
--- a/pages/alert/permutations.page.tsx
+++ b/pages/alert/permutations.page.tsx
@@ -17,7 +17,7 @@ const longText =
 const longTextWithLink = (
   <>
     Lorem ipsum dolor sit amet, <Link href="#">consectetur</Link> adipisicing{' '}
-    <Link external={true} href="#">
+    <Link external={true} href="#" externalIconAriaLabel="(opens in new tab)">
       elit
     </Link>
     , sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud
diff --git a/pages/app-layout/utils/content-blocks.tsx b/pages/app-layout/utils/content-blocks.tsx
index ef1889b6b0..0385c3ab80 100644
--- a/pages/app-layout/utils/content-blocks.tsx
+++ b/pages/app-layout/utils/content-blocks.tsx
@@ -22,6 +22,7 @@ import styles from '../styles.scss';
 export function Breadcrumbs() {
   return (
     <BreadcrumbGroup
+      expandAriaLabel="Show path"
       items={[
         { text: 'Home', href: '#' },
         { text: 'Service', href: '#' },
diff --git a/pages/key-value-pairs/permutations.page.tsx b/pages/key-value-pairs/permutations.page.tsx
index 122886af24..a0c96c8d68 100644
--- a/pages/key-value-pairs/permutations.page.tsx
+++ b/pages/key-value-pairs/permutations.page.tsx
@@ -58,7 +58,7 @@ const permutations = createPermutations<KeyValuePairsProps>([
         {
           label: 'CNAMEs',
           value: (
-            <Link external={true} href="#">
+            <Link external={true} href="#" externalIconAriaLabel="(opens in new tab)">
               abc.service23G24.xyz
             </Link>
           ),
diff --git a/pages/steps/permutations-utils.tsx b/pages/steps/permutations-utils.tsx
index be4bd33247..6fb25cebd6 100644
--- a/pages/steps/permutations-utils.tsx
+++ b/pages/steps/permutations-utils.tsx
@@ -316,6 +316,7 @@ export const loadingStepsInteractive: ReadonlyArray<StepsProps.Step> = [
         Listed EC2 instances:{' '}
         <Popover
           header={'EC2 Instance IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -357,6 +358,7 @@ export const loadingSteps2Interactive: ReadonlyArray<StepsProps.Step> = [
         Listed EC2 instances:{' '}
         <Popover
           header={'EC2 Instance IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -382,6 +384,7 @@ export const loadingSteps2Interactive: ReadonlyArray<StepsProps.Step> = [
         Gathered Security Group IDs:{' '}
         <Popover
           header={'Security Group IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -414,6 +417,7 @@ export const loadingSteps3Interactive: ReadonlyArray<StepsProps.Step> = [
         Listed EC2 instances:{' '}
         <Popover
           header={'EC2 Instance IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -439,6 +443,7 @@ export const loadingSteps3Interactive: ReadonlyArray<StepsProps.Step> = [
         Gathered Security Group IDs:{' '}
         <Popover
           header={'Security Group IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -476,6 +481,7 @@ export const successfulStepsInteractive: ReadonlyArray<StepsProps.Step> = [
         Listed EC2 instances:{' '}
         <Popover
           header={'EC2 Instance IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -501,6 +507,7 @@ export const successfulStepsInteractive: ReadonlyArray<StepsProps.Step> = [
         Gathered Security Group IDs:{' '}
         <Popover
           header={'Security Group IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -538,6 +545,7 @@ export const blockedStepsInteractive: ReadonlyArray<StepsProps.Step> = [
         Listed EC2 instances:{' '}
         <Popover
           header={'EC2 Instance IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -563,6 +571,7 @@ export const blockedStepsInteractive: ReadonlyArray<StepsProps.Step> = [
         Gathered Security Group IDs:{' '}
         <Popover
           header={'Security Group IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -601,6 +610,7 @@ export const failedStepsInteractive: ReadonlyArray<StepsProps.Step> = [
         Listed EC2 instances:{' '}
         <Popover
           header={'EC2 Instance IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -634,6 +644,7 @@ export const failedStepsWithRetryTextInteractive: ReadonlyArray<StepsProps.Step>
         Listed EC2 instances:{' '}
         <Popover
           header={'EC2 Instance IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
@@ -672,6 +683,7 @@ export const failedStepsWithRetryButtonInteractive: ReadonlyArray<StepsProps.Ste
         Listed EC2 instances:{' '}
         <Popover
           header={'EC2 Instance IDs'}
+          dismissAriaLabel="Close"
           content={
             <Box fontSize="body-s">
               <ul>
diff --git a/src/autosuggest/internal.tsx b/src/autosuggest/internal.tsx
index c824b2446e..cef41f968a 100644
--- a/src/autosuggest/internal.tsx
+++ b/src/autosuggest/internal.tsx
@@ -77,9 +77,7 @@ const InternalAutosuggest = React.forwardRef((props: InternalAutosuggestProps, r
   );
 
   const i18n = useInternalI18n('autosuggest');
-  const errorIconAriaLabel = i18n('errorIconAriaLabel', restProps.errorIconAriaLabel);
   const selectedAriaLabel = i18n('selectedAriaLabel', restProps.selectedAriaLabel);
-  const recoveryText = i18n('recoveryText', restProps.recoveryText);
 
   if (restProps.recoveryText && !onLoadItems) {
     warnOnce('Autosuggest', '`onLoadItems` must be provided for `recoveryText` to be displayed.');
@@ -188,8 +186,8 @@ const InternalAutosuggest = React.forwardRef((props: InternalAutosuggestProps, r
     ...props,
     isEmpty,
     isFiltered,
-    recoveryText,
-    errorIconAriaLabel,
+    getRecoveryText: () => i18n('errorIconAriaLabel', restProps.errorIconAriaLabel),
+    getErrorIconAriaLabel: () => i18n('recoveryText', restProps.recoveryText),
     onRecoveryClick: handleRecoveryClick,
     filteringResultsText: filteredText,
     hasRecoveryCallback: !!onLoadItems,
diff --git a/src/cards/index.tsx b/src/cards/index.tsx
index 015b80fd91..f26821c717 100644
--- a/src/cards/index.tsx
+++ b/src/cards/index.tsx
@@ -98,10 +98,12 @@ const Cards = React.forwardRef(function <T = any>(
     selectionType,
     isItemDisabled,
     onSelectionChange,
-    ariaLabels: {
-      itemSelectionLabel: ariaLabels?.itemSelectionLabel,
-      selectionGroupLabel: i18n('ariaLabels.selectionGroupLabel', ariaLabels?.selectionGroupLabel),
-    },
+    ariaLabels: selectionType
+      ? {
+          itemSelectionLabel: ariaLabels?.itemSelectionLabel,
+          selectionGroupLabel: i18n('ariaLabels.selectionGroupLabel', ariaLabels?.selectionGroupLabel),
+        }
+      : {},
   });
   const hasToolsHeader = header || filter || pagination || preferences;
   const hasFooterPagination = isMobile && variant === 'full-page' && !!pagination;
diff --git a/src/form/internal.tsx b/src/form/internal.tsx
index f9a66c6ef3..f86c4902fe 100644
--- a/src/form/internal.tsx
+++ b/src/form/internal.tsx
@@ -35,7 +35,7 @@ export default function InternalForm({
 }: InternalFormProps) {
   const baseProps = getBaseProps(props);
   const i18n = useInternalI18n('form');
-  const errorIconAriaLabel = i18n('errorIconAriaLabel', errorIconAriaLabelOverride);
+  const errorIconAriaLabel = errorText ? i18n('errorIconAriaLabel', errorIconAriaLabelOverride) : undefined;
   const analyticsComponentMetadata: GeneratedAnalyticsMetadataFormFragment = {
     component: {
       name: 'awsui.Form',
diff --git a/src/i18n/__tests__/i18n.test.tsx b/src/i18n/__tests__/i18n.test.tsx
index beb4a8cdda..a21748f44a 100644
--- a/src/i18n/__tests__/i18n.test.tsx
+++ b/src/i18n/__tests__/i18n.test.tsx
@@ -4,8 +4,20 @@
 import React from 'react';
 import { render } from '@testing-library/react';
 
+import { clearMessageCache } from '@cloudscape-design/component-toolkit/internal/testing';
+
 import { I18nProvider, I18nProviderProps } from '../../../lib/components/i18n';
-import { MESSAGES, TestComponent } from './test-component';
+import { MESSAGES, SimpleTestComponent, TestComponent } from './test-component';
+
+beforeEach(() => {
+  clearMessageCache();
+  jest.spyOn(console, 'warn').mockImplementation(() => {});
+});
+
+afterEach(() => {
+  expect(console.warn).not.toHaveBeenCalled();
+  jest.restoreAllMocks();
+});
 
 describe('with custom "lang" on <html>', () => {
   afterEach(() => {
@@ -145,3 +157,10 @@ it('allows nesting providers', () => {
   expect(container.querySelector('#top-level-string')).toHaveTextContent('My custom string');
   expect(container.querySelector('#nested-string')).toHaveTextContent('nested string');
 });
+
+it('prints a warning when a string is not provided neither via prop nor I18nProvider', () => {
+  render(<SimpleTestComponent />);
+  expect(console.warn).toHaveBeenCalledTimes(1);
+  expect(console.warn).toHaveBeenCalledWith(expect.stringMatching(/topLevelString.*I18nProvider/));
+  jest.mocked(console.warn).mockReset();
+});
diff --git a/src/i18n/__tests__/test-component.tsx b/src/i18n/__tests__/test-component.tsx
index e4248ad6c2..535c996ce6 100644
--- a/src/i18n/__tests__/test-component.tsx
+++ b/src/i18n/__tests__/test-component.tsx
@@ -60,3 +60,9 @@ export function TestComponent(props: TestComponentProps) {
     </ul>
   );
 }
+
+export function SimpleTestComponent(props: TestComponentProps) {
+  const i18n = useInternalI18n('test-component');
+
+  return <span id="top-level-string">{i18n('topLevelString', props.topLevelString)}</span>;
+}
diff --git a/src/i18n/context.ts b/src/i18n/context.ts
index 508429b077..9a8c7cf11a 100644
--- a/src/i18n/context.ts
+++ b/src/i18n/context.ts
@@ -3,6 +3,9 @@
 
 import React, { useContext } from 'react';
 
+import { warnOnce } from '@cloudscape-design/component-toolkit/internal';
+
+import { isDevelopment } from '../internal/is-development';
 import { I18nFormatArgTypes } from './messages-types';
 
 export type CustomHandler<ReturnValue, FormatFnArgs> = (formatFn: (args: FormatFnArgs) => string) => ReturnValue;
@@ -20,7 +23,15 @@ interface InternalI18nContextProps {
 
 export const InternalI18nContext = React.createContext<InternalI18nContextProps>({
   locale: null,
-  format: <T>(_namespace: string, _component: string, _key: string, provided: T) => provided,
+  format: <T>(_namespace: string, component: string, key: string, provided: T) => {
+    if (isDevelopment && !provided) {
+      warnOnce(
+        component,
+        `Localization is not provided for key ${key}. Provide the value as a prop or use I18nProvider`
+      );
+    }
+    return provided;
+  },
 });
 
 export function useLocale(): string | null {
diff --git a/src/internal/components/dropdown-status/index.tsx b/src/internal/components/dropdown-status/index.tsx
index 3180cdb7ae..7b9002494b 100644
--- a/src/internal/components/dropdown-status/index.tsx
+++ b/src/internal/components/dropdown-status/index.tsx
@@ -12,7 +12,7 @@ import styles from './styles.css.js';
 
 export { DropdownStatusProps };
 
-export interface DropdownStatusPropsExtended extends DropdownStatusProps {
+export interface DropdownStatusPropsExtended extends Omit<DropdownStatusProps, 'recoveryText' | 'errorIconAriaLabel'> {
   isEmpty?: boolean;
   isNoMatch?: boolean;
   isFiltered?: boolean;
@@ -30,27 +30,16 @@ export interface DropdownStatusPropsExtended extends DropdownStatusProps {
    * in case recoveryText was automatically provided by i18n.
    */
   hasRecoveryCallback?: boolean;
+
+  getErrorIconAriaLabel: () => string | undefined;
+  getRecoveryText: () => string | undefined;
 }
 
 function DropdownStatus({ children }: { children: React.ReactNode }) {
   return <div className={styles.root}>{children}</div>;
 }
 
-type UseDropdownStatus = ({
-  statusType,
-  empty,
-  loadingText,
-  finishedText,
-  filteringResultsText,
-  errorText,
-  recoveryText,
-  isEmpty,
-  isNoMatch,
-  isFiltered,
-  noMatch,
-  hasRecoveryCallback,
-  onRecoveryClick,
-}: DropdownStatusPropsExtended) => DropdownStatusResult;
+type UseDropdownStatus = (statusProps: DropdownStatusPropsExtended) => DropdownStatusResult;
 
 export interface DropdownStatusResult {
   isSticky: boolean;
@@ -65,14 +54,14 @@ export const useDropdownStatus: UseDropdownStatus = ({
   finishedText,
   filteringResultsText,
   errorText,
-  recoveryText,
+  getRecoveryText,
   isEmpty,
   isNoMatch,
   isFiltered,
   noMatch,
   onRecoveryClick,
   hasRecoveryCallback = false,
-  errorIconAriaLabel,
+  getErrorIconAriaLabel,
 }): DropdownStatusResult => {
   const previousStatusType = usePrevious(statusType);
   const statusResult: DropdownStatusResult = { isSticky: true, content: null, hasRecoveryButton: false };
@@ -80,6 +69,7 @@ export const useDropdownStatus: UseDropdownStatus = ({
   if (statusType === 'loading') {
     statusResult.content = <InternalStatusIndicator type={'loading'}>{loadingText}</InternalStatusIndicator>;
   } else if (statusType === 'error') {
+    const recoveryText = getRecoveryText();
     statusResult.hasRecoveryButton = !!recoveryText && hasRecoveryCallback;
     statusResult.content = (
       <span>
@@ -87,7 +77,7 @@ export const useDropdownStatus: UseDropdownStatus = ({
           type="error"
           __display="inline"
           __animate={previousStatusType !== 'error'}
-          iconAriaLabel={errorIconAriaLabel}
+          iconAriaLabel={getErrorIconAriaLabel()}
         >
           {errorText}
         </InternalStatusIndicator>{' '}
diff --git a/src/link/internal.tsx b/src/link/internal.tsx
index cccffbab81..d659a523cc 100644
--- a/src/link/internal.tsx
+++ b/src/link/internal.tsx
@@ -180,7 +180,7 @@ const InternalLink = React.forwardRef(
       sharedProps['aria-labelledby'] = `${sharedProps.id} ${infoId} ${infoLinkLabelFromContext}`;
     }
 
-    const renderedExternalIconAriaLabel = i18n('externalIconAriaLabel', externalIconAriaLabel);
+    const renderedExternalIconAriaLabel = external ? i18n('externalIconAriaLabel', externalIconAriaLabel) : undefined;
     const content = (
       <>
         {children}
diff --git a/src/multiselect/embedded.tsx b/src/multiselect/embedded.tsx
index e827c24d0b..7e01c4b936 100644
--- a/src/multiselect/embedded.tsx
+++ b/src/multiselect/embedded.tsx
@@ -44,7 +44,6 @@ const EmbeddedMultiselect = React.forwardRef(
       filteringType,
       ariaLabel,
       selectedOptions,
-      deselectAriaLabel,
       virtualScroll,
       filteringText = '',
       ...restProps
@@ -58,8 +57,6 @@ const EmbeddedMultiselect = React.forwardRef(
       options,
       selectedOptions,
       filteringType,
-      disabled: false,
-      deselectAriaLabel,
       controlId: formFieldContext.controlId,
       ariaLabelId,
       footerId,
diff --git a/src/multiselect/internal.tsx b/src/multiselect/internal.tsx
index f2ed2cf44b..6025af7bd6 100644
--- a/src/multiselect/internal.tsx
+++ b/src/multiselect/internal.tsx
@@ -73,8 +73,6 @@ const InternalMultiselect = React.forwardRef(
       options,
       selectedOptions,
       filteringType,
-      disabled,
-      deselectAriaLabel,
       controlId,
       ariaLabelId,
       footerId,
@@ -122,9 +120,11 @@ const InternalMultiselect = React.forwardRef(
       iconUrl: option.iconUrl,
       iconSvg: option.iconSvg,
       tags: option.tags,
-      dismissLabel: i18n('deselectAriaLabel', deselectAriaLabel?.(option), format =>
-        format({ option__label: option.label ?? '' })
-      ),
+      dismissLabel: hideTokens
+        ? undefined
+        : i18n('deselectAriaLabel', deselectAriaLabel?.(option), format =>
+            format({ option__label: option.label ?? '' })
+          ),
     }));
 
     const ListComponent = virtualScroll ? VirtualList : PlainList;
diff --git a/src/multiselect/use-multiselect.tsx b/src/multiselect/use-multiselect.tsx
index 307c9f8849..da323549f1 100644
--- a/src/multiselect/use-multiselect.tsx
+++ b/src/multiselect/use-multiselect.tsx
@@ -30,10 +30,8 @@ type UseMultiselectOptions = SomeRequired<
     | 'selectedOptions'
     | 'filteringType'
     | 'filteringResultsText'
-    | 'disabled'
     | 'noMatch'
     | 'renderHighlightedAriaLive'
-    | 'deselectAriaLabel'
     | 'keepOpen'
     | 'onBlur'
     | 'onFocus'
@@ -56,7 +54,6 @@ export function useMultiselect({
   options,
   filteringType,
   filteringResultsText,
-  disabled,
   statusType,
   empty,
   loadingText,
@@ -65,7 +62,6 @@ export function useMultiselect({
   noMatch,
   renderHighlightedAriaLive,
   selectedOptions,
-  deselectAriaLabel,
   keepOpen,
   onBlur,
   onFocus,
@@ -82,10 +78,7 @@ export function useMultiselect({
 }: UseMultiselectOptions) {
   checkOptionValueField('Multiselect', 'options', options);
 
-  const i18n = useInternalI18n('multiselect');
   const i18nCommon = useInternalI18n('select');
-  const recoveryText = i18nCommon('recoveryText', restProps.recoveryText);
-  const errorIconAriaLabel = i18nCommon('errorIconAriaLabel', restProps.errorIconAriaLabel);
   const selectedAriaLabel = i18nCommon('selectedAriaLabel', restProps.selectedAriaLabel);
 
   if (restProps.recoveryText && !onLoadItems) {
@@ -190,14 +183,14 @@ export function useMultiselect({
     loadingText,
     finishedText,
     errorText,
-    recoveryText,
+    getRecoveryText: () => i18nCommon('recoveryText', restProps.recoveryText),
     isEmpty,
     isNoMatch,
     noMatch,
     isFiltered,
     filteringResultsText: filteredText,
     onRecoveryClick: handleRecoveryClick,
-    errorIconAriaLabel: errorIconAriaLabel,
+    getErrorIconAriaLabel: () => i18nCommon('errorIconAriaLabel', restProps.errorIconAriaLabel),
     hasRecoveryCallback: !!onLoadItems,
   });
 
@@ -209,21 +202,6 @@ export function useMultiselect({
     renderHighlightedAriaLive,
   });
 
-  const tokens: TokenGroupProps['items'] = selectedOptions.map(option => ({
-    label: option.label,
-    disabled: disabled || option.disabled,
-    labelTag: option.labelTag,
-    description: option.description,
-    iconAlt: option.iconAlt,
-    iconName: option.iconName,
-    iconUrl: option.iconUrl,
-    iconSvg: option.iconSvg,
-    tags: option.tags,
-    dismissLabel: i18n('deselectAriaLabel', deselectAriaLabel?.(option), format =>
-      format({ option__label: option.label ?? '' })
-    ),
-  }));
-
   useEffect(() => {
     scrollToIndex.current?.(highlightedIndex);
   }, [highlightedIndex]);
@@ -248,7 +226,6 @@ export function useMultiselect({
 
   return {
     isOpen,
-    tokens,
     announcement,
     dropdownStatus,
     filteringValue,
diff --git a/src/popover/internal.tsx b/src/popover/internal.tsx
index a371d5dda1..9198bfa7bc 100644
--- a/src/popover/internal.tsx
+++ b/src/popover/internal.tsx
@@ -69,7 +69,7 @@ function InternalPopover(
   const clickFrameId = useRef<number | null>(null);
 
   const i18n = useInternalI18n('popover');
-  const dismissAriaLabel = i18n('dismissAriaLabel', restProps.dismissAriaLabel);
+  const dismissAriaLabel = dismissButton ? i18n('dismissAriaLabel', restProps.dismissAriaLabel) : undefined;
 
   const [visible, setVisible] = useState(false);
 
diff --git a/src/property-filter/property-filter-autosuggest.tsx b/src/property-filter/property-filter-autosuggest.tsx
index 46f76e925e..1a3a618f95 100644
--- a/src/property-filter/property-filter-autosuggest.tsx
+++ b/src/property-filter/property-filter-autosuggest.tsx
@@ -164,6 +164,8 @@ const PropertyFilterAutosuggest = React.forwardRef(
       isEmpty,
       onRecoveryClick: handleRecoveryClick,
       hasRecoveryCallback: !!onLoadItems,
+      getErrorIconAriaLabel: () => undefined,
+      getRecoveryText: () => props.recoveryText,
     });
 
     let content = null;
diff --git a/src/select/internal.tsx b/src/select/internal.tsx
index 5657019db1..4ecc31c56d 100644
--- a/src/select/internal.tsx
+++ b/src/select/internal.tsx
@@ -78,9 +78,7 @@ const InternalSelect = React.forwardRef(
     const formFieldContext = useFormFieldContext(restProps);
 
     const i18n = useInternalI18n('select');
-    const errorIconAriaLabel = i18n('errorIconAriaLabel', restProps.errorIconAriaLabel);
     const selectedAriaLabel = i18n('selectedAriaLabel', restProps.selectedAriaLabel);
-    const recoveryText = i18n('recoveryText', restProps.recoveryText);
 
     if (restProps.recoveryText && !onLoadItems) {
       warnOnce('Select', '`onLoadItems` must be provided for `recoveryText` to be displayed.');
@@ -193,13 +191,13 @@ const InternalSelect = React.forwardRef(
       loadingText,
       finishedText,
       errorText,
-      recoveryText,
+      getRecoveryText: () => i18n('recoveryText', restProps.recoveryText),
       isEmpty,
       isNoMatch,
       noMatch,
       isFiltered,
       filteringResultsText: filteredText,
-      errorIconAriaLabel,
+      getErrorIconAriaLabel: () => i18n('errorIconAriaLabel', restProps.errorIconAriaLabel),
       onRecoveryClick: handleRecoveryClick,
       hasRecoveryCallback: !!onLoadItems,
     });
diff --git a/src/table/expandable-rows/expandable-rows-utils.ts b/src/table/expandable-rows/expandable-rows-utils.ts
index caead00e36..38e1072ca2 100644
--- a/src/table/expandable-rows/expandable-rows-utils.ts
+++ b/src/table/expandable-rows/expandable-rows-utils.ts
@@ -87,8 +87,12 @@ export function useExpandableTableProps<T>({
       isExpanded: expandedSet.has(item),
       onExpandableItemToggle: () =>
         fireNonCancelableEvent(expandableRows?.onExpandableItemToggle, { item, expanded: !expandedSet.has(item) }),
-      expandButtonLabel: i18n('ariaLabels.expandButtonLabel', ariaLabels?.expandButtonLabel?.(item)),
-      collapseButtonLabel: i18n('ariaLabels.collapseButtonLabel', ariaLabels?.collapseButtonLabel?.(item)),
+      expandButtonLabel: isExpandable
+        ? i18n('ariaLabels.expandButtonLabel', ariaLabels?.expandButtonLabel?.(item))
+        : undefined,
+      collapseButtonLabel: isExpandable
+        ? i18n('ariaLabels.collapseButtonLabel', ariaLabels?.collapseButtonLabel?.(item))
+        : undefined,
       parent,
       children,
     };