diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9b550f94..d8b3b5e2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,9 +11,15 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 -   `<ApplicationViewability />`
     -   component for hiding elements in specific media
 -   `<InlineText />`
-    -    force children to get displayed as inline content
+    -   force children to get displayed as inline content
+-   `<NotAvailable />`
+    -   simple placeholder element that can be used to display info about missing data
 -   `<StringPreviewContentBlobToggler />`
-    - `useOnly` property: specify if only parts of the content should be used for the shortened preview, this property replaces `firstNonEmptyLineOnly`
+    -   `useOnly` property: specify if only parts of the content should be used for the shortened preview, this property replaces `firstNonEmptyLineOnly`
+-   `<ContentBlobToggler />`
+    -   `forceInline` property: force inline rendering
+-   `<MultiSuggestField />`:
+    -   `isValidNewOption` property: Checks if an input string is or can be turned into a valid new option.
 
 ### Fixed
 
@@ -21,7 +27,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
     -   create more whitespace inside `small` tag
     -   reduce visual impact of border
 -   `<StringPreviewContentBlobToggler />`
-    -    take Markdown rendering into account before testing the maximum preview length
+    -   take Markdown rendering into account before testing the maximum preview length
 -   `<NodeContent />`
     -   header-menu items are vertically centered now
 
@@ -41,7 +47,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 ### Deprecated
 
 -   `<StringPreviewContentBlobToggler />`
-    -    `firstNonEmptyLineOnly` will be removed, is replaced by `useOnly="firstNonEmptyLine"`
+    -   `firstNonEmptyLineOnly` will be removed, is replaced by `useOnly="firstNonEmptyLine"`
 
 ## [25.0.0] - 2025-12-01
 
diff --git a/src/cmem/ContentBlobToggler/ContentBlobToggler.tsx b/src/cmem/ContentBlobToggler/ContentBlobToggler.tsx
index 26b214ab..91b9a06c 100644
--- a/src/cmem/ContentBlobToggler/ContentBlobToggler.tsx
+++ b/src/cmem/ContentBlobToggler/ContentBlobToggler.tsx
@@ -1,6 +1,6 @@
-import React, { useState } from "react";
+import React, { useState} from "react";
 
-import { Link, Spacing } from "../../index";
+import { Link, Spacing, InlineText } from "../../index";
 
 export interface ContentBlobTogglerProps extends React.HTMLAttributes<HTMLDivElement> {
     /**
@@ -31,6 +31,10 @@ export interface ContentBlobTogglerProps extends React.HTMLAttributes<HTMLDivEle
         Callback if toggler is necessary. Default: true
     */
     enableToggler?: boolean;
+    /**
+     * Force always inline rendering.
+     */
+    forceInline?: boolean;
 }
 
 /** Shows a preview with the option to expand to a full view (and back). */
@@ -42,6 +46,7 @@ export function ContentBlobToggler({
     fullviewContent,
     startExtended = false,
     enableToggler = true,
+    forceInline = false,
     ...otherProps
 }: ContentBlobTogglerProps) {
     const [isExtended, setViewState] = useState(startExtended);
@@ -51,7 +56,7 @@ export function ContentBlobToggler({
         setViewState(!isExtended);
     };
 
-    return (
+    const tooglerDisplay = (
         <div className={className} {...otherProps}>
             {!isExtended ? (
                 <>
@@ -76,7 +81,7 @@ export function ContentBlobToggler({
                     {fullviewContent}
                     {enableToggler && (
                         <div>
-                            <Spacing size="small" />
+                            {forceInline ? <>{" "}</> : <Spacing size="small" />}
                             <Link
                                 data-test-id={"content-blob-toggler-less-link"}
                                 href="#less"
@@ -92,4 +97,6 @@ export function ContentBlobToggler({
             )}
         </div>
     );
+
+    return forceInline ? <InlineText>{tooglerDisplay}</InlineText> : tooglerDisplay;
 }
diff --git a/src/cmem/ContentBlobToggler/StringPreviewContentBlobToggler.tsx b/src/cmem/ContentBlobToggler/StringPreviewContentBlobToggler.tsx
index e5ec7a79..08c19a43 100644
--- a/src/cmem/ContentBlobToggler/StringPreviewContentBlobToggler.tsx
+++ b/src/cmem/ContentBlobToggler/StringPreviewContentBlobToggler.tsx
@@ -54,6 +54,7 @@ export function StringPreviewContentBlobToggler({
     allowedHtmlElementsInPreview,
     noTogglerContentSuffix,
     firstNonEmptyLineOnly,
+    ...otherContentBlobTogglerProps
 }: StringPreviewContentBlobTogglerProps) {
     // need to test `firstNonEmptyLineOnly` until property is removed
     const useOnlyTest: StringPreviewContentBlobTogglerProps["useOnly"] = firstNonEmptyLineOnly
@@ -105,6 +106,7 @@ export function StringPreviewContentBlobToggler({
             fullviewContent={fullviewContent}
             startExtended={startExtended}
             enableToggler={enableToggler}
+            {...otherContentBlobTogglerProps}
         />
     );
 }
diff --git a/src/components/MultiSelect/MultiSelect.tsx b/src/components/MultiSelect/MultiSelect.tsx
index 3685ed86..b0e0bd5f 100644
--- a/src/components/MultiSelect/MultiSelect.tsx
+++ b/src/components/MultiSelect/MultiSelect.tsx
@@ -70,9 +70,11 @@ interface MultiSuggestFieldCommonProps<T>
      */
     newItemCreationText?: string;
     /**
-     * Allows to creates new item from a given query. If this is not provided then no new items can be created.
+     * Allows to create new item from a given query. If this is not provided then no new items can be created.
      */
     createNewItemFromQuery?: (query: string) => T;
+    /** Validates if a new item can be created from the current query string. */
+    isValidNewOption?: (query: string) => boolean;
     /**
      * Items that were newly created and not taken from the list will be post-fixed with this string.
      */
@@ -159,6 +161,7 @@ export function MultiSuggestField<T>({
     newItemPostfix = " (new item)",
     disabled,
     createNewItemFromQuery,
+    isValidNewOption,
     requestDelay = 0,
     clearQueryOnSelection = false,
     className,
@@ -387,7 +390,9 @@ export function MultiSuggestField<T>({
      */
     const handleOnKeyUp = (event: React.KeyboardEvent<HTMLElement>) => {
         if (event.key === "Enter" && !filteredItems.length && !!requestState.current.query && createNewItemFromQuery) {
-            createNewItem(requestState.current.query);
+            if(!isValidNewOption || isValidNewOption(requestState.current.query)) {
+                createNewItem(requestState.current.query);
+            }
         }
         inputRef.current?.focus();
     };
@@ -403,7 +408,11 @@ export function MultiSuggestField<T>({
             if (focusedItem) {
                 onItemSelect(focusedItem);
             } else {
-                onItemSelect(createNewItem(requestState.current.query));
+                if (!isValidNewOption || isValidNewOption(requestState.current.query)) {
+                    onItemSelect(createNewItem(requestState.current.query));
+                } else {
+                    return
+                }
             }
             requestState.current.query = "";
             setTimeout(() => inputRef.current?.focus());
@@ -418,7 +427,7 @@ export function MultiSuggestField<T>({
      * @returns
      */
     const newItemRenderer = (label: string, active: boolean, handleClick: React.MouseEventHandler<HTMLElement>) => {
-        if (!createNewItemFromQuery) return undefined;
+        if (!createNewItemFromQuery || isValidNewOption && !isValidNewOption(label)) return undefined;
         const clickHandler = (e: React.MouseEvent<HTMLElement>) => {
             createNewItem(label);
             handleClick(e);
diff --git a/src/components/NotAvailable/NotAvailable.stories.tsx b/src/components/NotAvailable/NotAvailable.stories.tsx
new file mode 100644
index 00000000..29dde1e3
--- /dev/null
+++ b/src/components/NotAvailable/NotAvailable.stories.tsx
@@ -0,0 +1,15 @@
+import React from "react";
+import { Meta, StoryFn } from "@storybook/react";
+
+import { NotAvailable } from "../../../index";
+
+export default {
+    title: "Components/NotAvailable",
+    component: NotAvailable,
+    argTypes: {},
+} as Meta<typeof NotAvailable>;
+
+const TemplateFull: StoryFn<typeof NotAvailable> = (args) => <NotAvailable {...args} />;
+
+export const Default = TemplateFull.bind({});
+Default.args = {};
diff --git a/src/components/NotAvailable/NotAvailable.tsx b/src/components/NotAvailable/NotAvailable.tsx
new file mode 100644
index 00000000..47b14adb
--- /dev/null
+++ b/src/components/NotAvailable/NotAvailable.tsx
@@ -0,0 +1,70 @@
+import React from "react";
+
+import {
+    CLASSPREFIX as eccgui,
+    Tag,
+    TagProps,
+    Tooltip,
+    TooltipProps,
+} from "../../../index";
+import { TestableComponent } from "../interfaces";
+export interface NotAvailableProps extends TestableComponent, Pick<TagProps, "icon" | "className">, Pick<TooltipProps, "intent"> {
+    /**
+     * Text displayed by the element.
+     */
+    label?: TagProps["children"];
+    /**
+     * Add a tooltip to the element.
+     * You need to set an empty string `""` to remove it.
+     */
+    tooltip?: TooltipProps["content"];
+    /**
+     * Specify the display of the used `Tag` component.
+     */
+    tagProps?: Omit<TagProps, "icon" | "intent" | "children">;
+    /**
+     * Specify the display of the used `Tooltip` component.
+     */
+    tooltipProps?: Omit<TooltipProps, "content" | "intent" | "children">;
+    /**
+     * Do not use the `Tag` component for the display.
+     * The `intent` state can be displayed only on the tooltip then.
+     */
+    noTag?: boolean;
+}
+
+/**
+ * Simple placeholder element that can be used to display info about missing data.
+ */
+export const NotAvailable = ({
+    label = "n/a",
+    tooltip = "not available",
+    icon,
+    intent,
+    tagProps,
+    tooltipProps,
+    className,
+    noTag = false,
+    ...otherProps
+}: NotAvailableProps) => {
+    const defaultTagProps : TagProps = { icon, intent, emphasis: "weaker", className: `${eccgui}-notavailable` + className ? ` ${className}` : "" };
+    const naElement = noTag === false ? (
+        <Tag
+            {...defaultTagProps}
+            {...tagProps}
+            {...otherProps}
+        >
+            { label ?? "n/a"}
+        </Tag>
+    ) : <>{ label ?? "n/a"}</>;
+    const defaultTooltipProps : TooltipProps = {
+        children: naElement,
+        content: tooltip,
+        intent,
+        addIndicator: noTag,
+    };
+
+    return tooltip ? <Tooltip {...defaultTooltipProps} {...tooltipProps} /> : naElement;
+};
+
+export default NotAvailable;
diff --git a/src/components/index.ts b/src/components/index.ts
index 6f7fdf95..5e1c496d 100644
--- a/src/components/index.ts
+++ b/src/components/index.ts
@@ -23,6 +23,7 @@ export * from "./Link/Link";
 export * from "./List/List";
 export * from "./Menu";
 export * from "./MultiSuggestField";
+export * from "./NotAvailable/NotAvailable";
 export * from "./Notification";
 export * from "./OverviewItem";
 export * from "./Pagination/Pagination";