diff --git a/packages/twenty-server/src/engine/twenty-orm/utils/format-result.util.ts b/packages/twenty-server/src/engine/twenty-orm/utils/format-result.util.ts
index 673c2d6d0a..ed8949c2c5 100644
--- a/packages/twenty-server/src/engine/twenty-orm/utils/format-result.util.ts
+++ b/packages/twenty-server/src/engine/twenty-orm/utils/format-result.util.ts
@@ -182,6 +182,39 @@ export function formatResult<T>(
     newData[dateField.name] = rawUpdatedDate;
   }
 
+  const fieldMetadataItemsOfTypeDateTimeOnly =
+    getFlatFieldsFromFlatObjectMetadata(
+      flatObjectMetadata,
+      flatFieldMetadataMaps,
+    ).filter((field) => field.type === FieldMetadataType.DATE_TIME);
+
+  for (const dateTimeField of fieldMetadataItemsOfTypeDateTimeOnly) {
+    // @ts-expect-error legacy noImplicitAny
+    const rawUpdatedDateTime = newData[dateTimeField.name] as
+      | string
+      | Date
+      | null
+      | undefined;
+
+    if (!isDefined(rawUpdatedDateTime)) {
+      continue;
+    }
+
+    if (typeof rawUpdatedDateTime === 'string') {
+      // @ts-expect-error legacy noImplicitAny
+      newData[dateTimeField.name] = rawUpdatedDateTime;
+    } else if (rawUpdatedDateTime instanceof Date) {
+      const dateIsoString = rawUpdatedDateTime.toISOString();
+
+      // @ts-expect-error legacy noImplicitAny
+      newData[dateTimeField.name] = dateIsoString;
+    } else {
+      throw new Error(
+        `Invalid DATE_TIME field "${dateTimeField.name}", value: "${rawUpdatedDateTime}", it should be a string or Date instance, (current type : ${typeof rawUpdatedDateTime}).`,
+      );
+    }
+  }
+
   return newData as T;
 }
 
diff --git a/packages/twenty-server/test/integration/graphql/suites/inputs-validation/create-validation/__snapshots__/date-time-field-create-input-validation.integration-spec.ts.snap b/packages/twenty-server/test/integration/graphql/suites/inputs-validation/create-validation/__snapshots__/date-time-field-create-input-validation.integration-spec.ts.snap
index 2625772ebd..230e817f8e 100644
--- a/packages/twenty-server/test/integration/graphql/suites/inputs-validation/create-validation/__snapshots__/date-time-field-create-input-validation.integration-spec.ts.snap
+++ b/packages/twenty-server/test/integration/graphql/suites/inputs-validation/create-validation/__snapshots__/date-time-field-create-input-validation.integration-spec.ts.snap
@@ -6,7 +6,7 @@ exports[`Create input validation - DATE_TIME Gql create input - failure DATE_TIM
 
 exports[`Create input validation - DATE_TIME Gql create input - failure DATE_TIME - should fail with : {"dateTimeField":{}} 1`] = `"Invalid value {} for date or date-time field "dateTimeField""`;
 
-exports[`Create input validation - DATE_TIME Gql create input - failure DATE_TIME - should fail with : {"dateTimeField":1} 1`] = `"invalid input syntax for type timestamp with time zone: "1""`;
+exports[`Create input validation - DATE_TIME Gql create input - failure DATE_TIME - should fail with : {"dateTimeField":1} 1`] = `"Invalid DATE_TIME field "dateTimeField", value: "1", it should be a string or Date instance, (current type : number)."`;
 
 exports[`Create input validation - DATE_TIME Gql create input - failure DATE_TIME - should fail with : {"dateTimeField":true} 1`] = `"Invalid value true for date or date-time field "dateTimeField""`;
 
@@ -16,6 +16,6 @@ exports[`Create input validation - DATE_TIME Rest create input - failure DATE_TI
 
 exports[`Create input validation - DATE_TIME Rest create input - failure DATE_TIME - should fail with : {"dateTimeField":{}} 1`] = `"["Invalid value {} for date or date-time field \\"dateTimeField\\""]"`;
 
-exports[`Create input validation - DATE_TIME Rest create input - failure DATE_TIME - should fail with : {"dateTimeField":1} 1`] = `"["invalid input syntax for type timestamp with time zone: \\"1\\""]"`;
+exports[`Create input validation - DATE_TIME Rest create input - failure DATE_TIME - should fail with : {"dateTimeField":1} 1`] = `"["Invalid DATE_TIME field \\"dateTimeField\\", value: \\"1\\", it should be a string or Date instance, (current type : number)."]"`;
 
 exports[`Create input validation - DATE_TIME Rest create input - failure DATE_TIME - should fail with : {"dateTimeField":true} 1`] = `"["Invalid value true for date or date-time field \\"dateTimeField\\""]"`;