diff --git a/apps/server/src/modules/board/service/content-element.service.ts b/apps/server/src/modules/board/service/content-element.service.ts
index b6e3fb08470..e8e0142e066 100644
--- a/apps/server/src/modules/board/service/content-element.service.ts
+++ b/apps/server/src/modules/board/service/content-element.service.ts
@@ -92,12 +92,12 @@ export class ContentElementService {
 	async replaceElementWithPlaceholder(contextExternalToolId: EntityId) {
 		const externalToolElements: ExternalToolElementNodeEntity[] = await this.findElementsById(contextExternalToolId);
 
-		externalToolElements.forEach((element) => {
+		externalToolElements.forEach(async (element) => {
 			if (element.parentId) {
 				const boardNode = this.boardDoRepo.findById(element.parentId);
 
 				// TODO
-				this.create(element.ancestorIds, BoardNodeType.PLACEHOLDER);
+				await this.create(boardNode, BoardNodeType.PLACEHOLDER);
 				const placeholder = new PlaceholderElementNodeEntity({
 					title,
 					type,
diff --git a/apps/server/src/shared/domain/domainobject/board/card.do.ts b/apps/server/src/shared/domain/domainobject/board/card.do.ts
index 8635e2db8d1..a7a91aaaa8e 100644
--- a/apps/server/src/shared/domain/domainobject/board/card.do.ts
+++ b/apps/server/src/shared/domain/domainobject/board/card.do.ts
@@ -1,3 +1,4 @@
+import { PlaceholderElement } from '@shared/domain/domainobject';
 import { DrawingElement } from '@shared/domain/domainobject/board/drawing-element.do';
 import { BoardComposite, BoardCompositeProps } from './board-composite.do';
 import { CollaborativeTextEditorElement } from './collaborative-text-editor-element.do';
@@ -33,6 +34,7 @@ export class Card extends BoardComposite<CardProps> {
 			domainObject instanceof RichTextElement ||
 			domainObject instanceof SubmissionContainerElement ||
 			domainObject instanceof ExternalToolElement ||
+			domainObject instanceof PlaceholderElement ||
 			domainObject instanceof CollaborativeTextEditorElement;
 		return allowed;
 	}