diff --git a/src/components/events/partials/ModalTabsAndPages/NewMetadataPage.tsx b/src/components/events/partials/ModalTabsAndPages/NewMetadataPage.tsx
index 064bea4495..fbe3467f8e 100644
--- a/src/components/events/partials/ModalTabsAndPages/NewMetadataPage.tsx
+++ b/src/components/events/partials/ModalTabsAndPages/NewMetadataPage.tsx
@@ -57,13 +57,13 @@ const NewMetadataPage = ({
 														{field.type === "mixed_text" &&
 														field.collection?.length !== 0 ? (
 															<Field
-																name={catalog.flavor + "_" + field.id}
+																name={"metadata" + "." + catalog.flavor + "_" + field.id}
 																fieldInfo={field}
 																component={RenderMultiField}
 															/>
 														) : (
 															<Field
-																name={catalog.flavor + "_" + field.id}
+																name={"metadata" + "." + catalog.flavor + "_" + field.id}
 																metadataField={field}
 																isFirstField={index === 0 && key === 0}
 																component={RenderField}
diff --git a/src/components/events/partials/wizards/NewEventSummary.tsx b/src/components/events/partials/wizards/NewEventSummary.tsx
index 626b31410a..43baec1036 100644
--- a/src/components/events/partials/wizards/NewEventSummary.tsx
+++ b/src/components/events/partials/wizards/NewEventSummary.tsx
@@ -39,7 +39,7 @@ interface RequiredFormProps {
 	configuration: { [key: string]: string }
 	policies: TransformedAcl[]
 	uploadAssetsTrack?: UploadAssetsTrack[]
-	[key: string]: unknown,  // Metadata fields
+	metadata: { [key: string]: unknown }
 }
 
 const NewEventSummary = <T extends RequiredFormProps>({
@@ -75,7 +75,7 @@ const NewEventSummary = <T extends RequiredFormProps>({
 			value: File,
 		}[] = [];
 		for (let i = 0; uploadAssetOptions.length > i; i++) {
-			const fieldValue = formik.values[uploadAssetOptions[i].id] as File;
+			const fieldValue = formik.values.metadata[uploadAssetOptions[i].id] as File;
 			if (fieldValue) {
 				const displayOverride = uploadAssetOptions[i].displayOverride as ParseKeys;
 				setUploadAssetsNonTrack(uploadAssetsNonTrack.concat({
@@ -104,7 +104,7 @@ const NewEventSummary = <T extends RequiredFormProps>({
 				<MetadataSummaryTable
 					metadataCatalogs={[metadataEvents]}
 					// @ts-expect-error: Metadata not correctly typed
-					formikValues={formik.values}
+					formikValues={formik.values.metadata}
 					header={"EVENTS.EVENTS.NEW.METADATA.CAPTION"}
 				/>
 
@@ -113,7 +113,7 @@ const NewEventSummary = <T extends RequiredFormProps>({
 					<MetadataSummaryTable
 						metadataCatalogs={extendedMetadata}
 						// @ts-expect-error: Metadata not correctly typed
-						formikValues={formik.values}
+						formikValues={formik.values.metadata}
 						header={"EVENTS.EVENTS.NEW.METADATA_EXTENDED.CAPTION"}
 					/>
 				)}
diff --git a/src/components/events/partials/wizards/NewEventWizard.tsx b/src/components/events/partials/wizards/NewEventWizard.tsx
index 98c9bc3173..c4c8af6be9 100644
--- a/src/components/events/partials/wizards/NewEventWizard.tsx
+++ b/src/components/events/partials/wizards/NewEventWizard.tsx
@@ -269,15 +269,15 @@ const getInitialValues = (
 	aclDefaultActions?: string[],
 	aclDefaultTemplate?: AclTemplate,
 ) => {
-	let initialValues = initialFormValuesNewEvents;
+	const initialValues = initialFormValuesNewEvents;
 
 	// Transform metadata fields provided by backend (saved in redux)
-	initialValues = { ...initialValues, ...getInitialMetadataFieldValues(
+	initialValues.metadata = { ...initialValues.metadata, ...getInitialMetadataFieldValues(
 		metadataFields,
 	) };
 
 	for (const catalog of extendedMetadata) {
-		initialValues = { ...initialValues, ...getInitialMetadataFieldValues(
+		initialValues.metadata = { ...initialValues.metadata, ...getInitialMetadataFieldValues(
 			catalog,
 		) };
 	}
@@ -290,17 +290,17 @@ const getInitialValues = (
 	// Transform additional metadata for source (provided by constant in newEventConfig)
 	if (sourceMetadata.UPLOAD) {
 		sourceMetadata.UPLOAD.metadata.forEach(field => {
-			initialValues[field.id] = field.value;
+			initialValues.metadata[field.id] = field.value;
 		});
 	}
 	if (sourceMetadata.SCHEDULE_SINGLE) {
 		sourceMetadata.SCHEDULE_SINGLE.metadata.forEach(field => {
-			initialValues[field.id] = field.value;
+			initialValues.metadata[field.id] = field.value;
 		});
 	}
 	if (sourceMetadata.SCHEDULE_MULTIPLE) {
 		sourceMetadata.SCHEDULE_MULTIPLE.metadata.forEach(field => {
-			initialValues[field.id] = field.value;
+			initialValues.metadata[field.id] = field.value;
 		});
 	}
 
@@ -318,11 +318,6 @@ const getInitialValues = (
 		};
 	}
 
-	// Add all initial form values known upfront listed in newEventsConfig
-	for (const [key, value] of Object.entries(initialFormValuesNewEvents)) {
-		initialValues[key] = value;
-	}
-
 	const defaultDate = new Date();
 
 	// fill times with some default values
diff --git a/src/components/events/partials/wizards/NewSeriesSummary.tsx b/src/components/events/partials/wizards/NewSeriesSummary.tsx
index a785d63805..1c940eb4df 100644
--- a/src/components/events/partials/wizards/NewSeriesSummary.tsx
+++ b/src/components/events/partials/wizards/NewSeriesSummary.tsx
@@ -20,6 +20,7 @@ interface RequiredFormProps {
 	theme: string,
 	policies: TransformedAcl[],
 	selectedPage?: TobiraPage,
+	metadata: { [key: string]: unknown }
 }
 
 const NewSeriesSummary = <T extends RequiredFormProps>({
@@ -47,7 +48,7 @@ const NewSeriesSummary = <T extends RequiredFormProps>({
 						<MetadataSummaryTable
 							metadataCatalogs={[metadataSeries]}
 							// @ts-expect-error TS(7006):
-							formikValues={formik.values}
+							formikValues={formik.values.metadata}
 							header={"EVENTS.SERIES.NEW.METADATA.CAPTION"}
 						/>
 
@@ -56,8 +57,7 @@ const NewSeriesSummary = <T extends RequiredFormProps>({
 							<MetadataSummaryTable
 								metadataCatalogs={extendedMetadata}
 								// @ts-expect-error TS(7006):
-								formikValues={formik.values}
-								formikInitialValues={formik.initialValues}
+								formikValues={formik.values.metadata}
 								header={"EVENTS.SERIES.NEW.METADATA_EXTENDED.CAPTION"}
 							/>
 						) : null}
diff --git a/src/components/events/partials/wizards/NewSeriesWizard.tsx b/src/components/events/partials/wizards/NewSeriesWizard.tsx
index 67a6e131f7..1879fe6071 100644
--- a/src/components/events/partials/wizards/NewSeriesWizard.tsx
+++ b/src/components/events/partials/wizards/NewSeriesWizard.tsx
@@ -142,7 +142,7 @@ const NewSeriesWizard = ({
 	const handleSubmit = (
 		values:
 			{
-				[key: string]: any;
+				metadata: { [key: string]: unknown }
 				policies: TransformedAcl[];
 				theme: string;
 			},
@@ -247,7 +247,7 @@ const getInitialValues = (
 	aclDefaultActions: string[],
 	aclDefaultTemplate?: AclTemplate,
 ) => {
-	let initialValues = initialFormValuesNewSeries;
+	const initialValues = initialFormValuesNewSeries;
 
 	// Transform metadata fields provided by backend (saved in redux)
 	let metadataInitialValues = getInitialMetadataFieldValues(
@@ -260,7 +260,7 @@ const getInitialValues = (
 		) };
 	}
 
-	initialValues = { ...initialValues, ...metadataInitialValues };
+	initialValues.metadata = { ...initialValues, ...metadataInitialValues };
 
 	initialValues["policies"] = [
 		{
diff --git a/src/configs/modalConfig.ts b/src/configs/modalConfig.ts
index d31ae4a1bd..b1c9cf6ed9 100644
--- a/src/configs/modalConfig.ts
+++ b/src/configs/modalConfig.ts
@@ -34,7 +34,7 @@ export const initialFormValuesNewEvents: {
 	aclTemplate: string,
 	policies: TransformedAcl[],
 	uploadAssetsTrack?: UploadAssetsTrack[]
-	[key: string]: unknown,  // Metadata fields that are getting added later
+	metadata: { [key: string]: unknown }
 } = {
 	sourceMode: "UPLOAD",
 	scheduleStartDate: new Date().toISOString(),
@@ -52,6 +52,7 @@ export const initialFormValuesNewEvents: {
 	configuration: {},
 	aclTemplate: "",
 	policies: [],
+	metadata: {},
 };
 
 // constants for hours and minutes (used in selection for start/end time and duration)
@@ -104,7 +105,8 @@ export const initialFormValuesNewSeries: {
 
 	breadcrumbs: TobiraPage[],
 	selectedPage?: TobiraPage,
-	[key: string]: unknown,  // Metadata fields that are getting added later
+	aclTemplate?: string,
+	metadata: { [key: string]: unknown }
 } = {
 	policies: [
 		{
@@ -117,6 +119,7 @@ export const initialFormValuesNewSeries: {
 	theme: "",
 	breadcrumbs: [],
 	selectedPage: undefined,
+	metadata: {},
 };
 
 // All fields for new theme form that are fix and not depending on response of backend
diff --git a/src/slices/eventSlice.ts b/src/slices/eventSlice.ts
index baa4a318bc..c9dea803a8 100644
--- a/src/slices/eventSlice.ts
+++ b/src/slices/eventSlice.ts
@@ -450,7 +450,7 @@ export const postNewEvent = (params: {
 		scheduleStartMinute: string,
 		sourceMode: string,
 		uploadAssetsTrack?: UploadAssetsTrack[],
-		[key: string]: unknown,
+		metadata: { [key: string]: unknown },
 	},
 	metadataInfo: MetadataCatalog,
 	extendedMetadata: MetadataCatalog[],
@@ -477,11 +477,11 @@ export const postNewEvent = (params: {
 	// prepare metadata provided by user
 	const metadata = prepareMetadataFieldsForPost(
 		[metadataInfo],
-		values,
+		values.metadata,
 	);
 	const extendedMetadataCatalogs = prepareMetadataFieldsForPost(
 		extendedMetadata,
-		values,
+		values.metadata,
 	);
 
 	// if source mode is UPLOAD than also put metadata fields of that in metadataFields
@@ -494,7 +494,7 @@ export const postNewEvent = (params: {
 			for (const smetadata of sourceMetadata.UPLOAD.metadata) {
 				metadata[0].fields = metadata[0].fields.concat({
 					id: smetadata.id,
-					value: values[smetadata.id],
+					value: values.metadata[smetadata.id],
 					type: smetadata.type,
 				});
 			}
@@ -542,7 +542,7 @@ export const postNewEvent = (params: {
 			type: values.sourceMode,
 			metadata: {
 				start: startDate,
-				device: values.location,
+				device: values.metadata.location,
 				inputs: values.inputs ? values.inputs.join(",") : "",
 				end: endDate,
 				duration: duration.toString(),
@@ -596,12 +596,12 @@ export const postNewEvent = (params: {
 	}
 	for (let i = 0; uploadAssetOptions.length > i; i++) {
 		if (
-			!!values[uploadAssetOptions[i].id] &&
+			!!values.metadata[uploadAssetOptions[i].id] &&
 			values.sourceMode === "UPLOAD"
 		) {
 			formData.append(
 				uploadAssetOptions[i].id + ".0",
-				values[uploadAssetOptions[i].id] as File,
+				values.metadata[uploadAssetOptions[i].id] as File,
 			);
 			assets.options = assets.options.concat(uploadAssetOptions[i]);
 		}
diff --git a/src/slices/seriesSlice.ts b/src/slices/seriesSlice.ts
index aaeeb5b544..9d5725c624 100644
--- a/src/slices/seriesSlice.ts
+++ b/src/slices/seriesSlice.ts
@@ -184,7 +184,6 @@ export const fetchSeriesThemes = createAppAsyncThunk("series/fetchSeriesThemes",
 // post new series to backend
 export const postNewSeries = (params: {
 	values: {
-		[key: string]: any;
 		policies: TransformedAcl[],
 		// contributor: string[],
 		// creator: string[],
@@ -198,6 +197,7 @@ export const postNewSeries = (params: {
 		// title: string,
 		selectedPage?: TobiraPage,
 		breadcrumbs?: TobiraPage[],
+		metadata: { [key: string]: unknown }
 	},
 	metadataInfo: MetadataCatalog,
 	extendedMetadata: MetadataCatalog[]
@@ -207,11 +207,11 @@ export const postNewSeries = (params: {
 	// prepare metadata provided by user
 	const metadata = prepareMetadataFieldsForPost(
 		[metadataInfo],
-		values,
+		values.metadata,
 	);
 	const extendedMetadataCatalogs = prepareMetadataFieldsForPost(
 		extendedMetadata,
-		values,
+		values.metadata,
 	);
 
 	// metadata for post request
diff --git a/src/utils/validate.ts b/src/utils/validate.ts
index 15ce8cbdf6..9ef13471b9 100644
--- a/src/utils/validate.ts
+++ b/src/utils/validate.ts
@@ -68,7 +68,10 @@ export const MetadataSchema = (catalog: MetadataCatalog) => {
 	for (const [key, value] of Object.entries(schema)) {
 		schemaKeyReplace[catalog.flavor + "_" + key] = value;
 	}
-	const validateSchema = Yup.object().shape(schemaKeyReplace);
+
+	const validateSchema = Yup.object({
+    metadata: Yup.object(schemaKeyReplace),
+  });
 
 	return validateSchema;
 };