diff --git a/packages/core/src/execution-engine/node-execution-context/utils/__tests__/validate-value-against-schema.test.ts b/packages/core/src/execution-engine/node-execution-context/utils/__tests__/validate-value-against-schema.test.ts
index 4f389856ad..af6eb43395 100644
--- a/packages/core/src/execution-engine/node-execution-context/utils/__tests__/validate-value-against-schema.test.ts
+++ b/packages/core/src/execution-engine/node-execution-context/utils/__tests__/validate-value-against-schema.test.ts
@@ -247,65 +247,155 @@ describe('validateValueAgainstSchema', () => {
 		expect(typeof result).toEqual('number');
 	});
 
-	describe('when the mode is in Fixed mode, and the node is a resource mapper', () => {
-		const nodeType = {
-			description: {
-				properties: [
-					{
-						name: 'operation',
-						type: 'resourceMapper',
-						typeOptions: {
-							resourceMapper: {
-								mode: 'add',
+	describe('when validating a resource mapper value', () => {
+		describe('when attemptToConvertTypes === true', () => {
+			const nodeType = {
+				description: {
+					properties: [
+						{
+							name: 'operation',
+							type: 'resourceMapper',
+							typeOptions: {
+								resourceMapper: {
+									mode: 'add',
+								},
 							},
 						},
-					},
-				],
-			},
-		} as unknown as INodeType;
-
-		const node = {
-			parameters: {
-				operation: {
-					schema: [
-						{ id: 'num', type: 'number', required: true },
-						{ id: 'str', type: 'string', required: true },
-						{ id: 'obj', type: 'object', required: true },
-						{ id: 'arr', type: 'array', required: true },
 					],
-					attemptToConvertTypes: true,
-					mappingMode: '',
-					value: '',
 				},
-			},
-		} as unknown as INode;
+			} as unknown as INodeType;
 
-		const parameterName = 'operation.value';
+			const node = {
+				parameters: {
+					operation: {
+						schema: [
+							{ id: 'num', type: 'number', required: true },
+							{ id: 'str', type: 'string', required: true },
+							{ id: 'obj', type: 'object', required: true },
+							{ id: 'arr', type: 'array', required: true },
+						],
+						attemptToConvertTypes: true,
+						mappingMode: '',
+						value: '',
+					},
+				},
+			} as unknown as INode;
 
-		describe('should correctly validate values for', () => {
-			test.each([
-				{ num: 0 },
-				{ num: 23 },
-				{ num: -0 },
-				{ num: -Infinity },
-				{ num: Infinity },
-				{ str: '' },
-				{ str: ' ' },
-				{ str: 'hello' },
-				{ arr: [] },
-				{ obj: {} },
-			])('%s', (value) => {
-				expect(() =>
-					validateValueAgainstSchema(node, nodeType, value, parameterName, 0, 0),
-				).not.toThrow();
+			const parameterName = 'operation.value';
+
+			describe('should correctly validate values for', () => {
+				test.each([
+					{ num: 0 },
+					{ num: 23 },
+					{ num: -0 },
+					{ num: -Infinity },
+					{ num: Infinity },
+					{ str: '' },
+					{ str: ' ' },
+					{ str: 'hello' },
+					{ arr: [] },
+					{ obj: {} },
+				])('%s', (value) => {
+					expect(() =>
+						validateValueAgainstSchema(node, nodeType, value, parameterName, 0, 0),
+					).not.toThrow();
+				});
+			});
+
+			describe('should throw an error for', () => {
+				test.each([{ num: NaN }, { num: undefined }, { num: null }])('%s', (value) => {
+					expect(() =>
+						validateValueAgainstSchema(node, nodeType, value, parameterName, 0, 0),
+					).toThrow();
+				});
 			});
 		});
 
-		describe('should throw an error for', () => {
-			test.each([{ num: NaN }, { num: undefined }, { num: null }])('%s', (value) => {
-				expect(() =>
-					validateValueAgainstSchema(node, nodeType, value, parameterName, 0, 0),
-				).toThrow();
+		describe('when attemptToConvertTypes is not set (=default)', () => {
+			test('should correctly validate and convert types', () => {
+				const nodeType = {
+					description: {
+						properties: [
+							{
+								displayName: 'Columns',
+								name: 'columns',
+								type: 'resourceMapper',
+								noDataExpression: true,
+								default: {
+									mappingMode: 'defineBelow',
+									value: null,
+								},
+								required: true,
+								typeOptions: {
+									loadOptionsDependsOn: ['table.value', 'operation'],
+									resourceMapper: {
+										resourceMapperMethod: 'getMappingColumns',
+										mode: 'upsert',
+										fieldWords: {
+											singular: 'column',
+											plural: 'columns',
+										},
+										addAllFields: true,
+										multiKeyMatch: true,
+									},
+								},
+							},
+						],
+					},
+				} as unknown as INodeType;
+
+				const node: INode = {
+					parameters: {
+						columns: {
+							mappingMode: 'defineBelow',
+							value: {
+								id: 2,
+								count: '={{ $json.count }}',
+							},
+							matchingColumns: ['id'],
+							schema: [
+								{
+									id: 'id',
+									displayName: 'id',
+									required: false,
+									defaultMatch: true,
+									display: true,
+									type: 'number',
+									canBeUsedToMatch: true,
+								},
+								{
+									id: 'count',
+									displayName: 'count',
+									required: false,
+									defaultMatch: false,
+									display: true,
+									type: 'number',
+									canBeUsedToMatch: false,
+								},
+							],
+						},
+						options: {},
+					},
+					id: '8d6cec63-8db1-440c-8966-4d6311ee69a9',
+					name: 'add products to DB',
+					type: 'n8n-nodes-base.postgres',
+					typeVersion: 2.3,
+					position: [420, 0],
+				};
+
+				const value = {
+					id: 2,
+					count: '23',
+				};
+
+				const parameterName = 'columns.value';
+
+				const result = validateValueAgainstSchema(node, nodeType, value, parameterName, 0, 0);
+
+				expect(result).toEqual({
+					id: 2,
+					count: 23,
+				});
 			});
 		});
 	});
diff --git a/packages/core/src/execution-engine/node-execution-context/utils/validate-value-against-schema.ts b/packages/core/src/execution-engine/node-execution-context/utils/validate-value-against-schema.ts
index 58744adf03..f05929c456 100644
--- a/packages/core/src/execution-engine/node-execution-context/utils/validate-value-against-schema.ts
+++ b/packages/core/src/execution-engine/node-execution-context/utils/validate-value-against-schema.ts
@@ -56,8 +56,8 @@ const validateResourceMapperValue = (
 		if (schemaEntry?.type) {
 			const validationResult = validateFieldType(key, resolvedValue, schemaEntry.type, {
 				valueOptions: schemaEntry.options,
-				strict: !resourceMapperField.attemptToConvertTypes,
-				parseStrings: !!resourceMapperField.convertFieldsToString,
+				strict: resourceMapperField.attemptToConvertTypes === false,
+				parseStrings: Boolean(resourceMapperField.convertFieldsToString),
 			});
 
 			if (!validationResult.valid) {
diff --git a/packages/workflow/src/Interfaces.ts b/packages/workflow/src/Interfaces.ts
index 1d64f3e8fc..ab04bd429e 100644
--- a/packages/workflow/src/Interfaces.ts
+++ b/packages/workflow/src/Interfaces.ts
@@ -2722,8 +2722,8 @@ export type ResourceMapperValue = {
 	value: { [key: string]: string | number | boolean | null } | null;
 	matchingColumns: string[];
 	schema: ResourceMapperField[];
-	attemptToConvertTypes: boolean;
-	convertFieldsToString: boolean;
+	attemptToConvertTypes?: boolean;
+	convertFieldsToString?: boolean;
 };
 
 export type FilterOperatorType =