diff --git a/apps/web/lib/fileValidation.ts b/apps/web/lib/fileValidation.ts
index 47bc3ba1c1..f19fdf98bb 100644
--- a/apps/web/lib/fileValidation.ts
+++ b/apps/web/lib/fileValidation.ts
@@ -65,7 +65,8 @@ export const validateSingleFile = (
   return !allowedFileExtensions || allowedFileExtensions.includes(extension as TAllowedFileExtension);
 };
 
-export const validateFileUploads = (data: TResponseData, questions?: TSurveyQuestion[]): boolean => {
+export const validateFileUploads = (data?: TResponseData, questions?: TSurveyQuestion[]): boolean => {
+  if (!data) return true;
   for (const key of Object.keys(data)) {
     const question = questions?.find((q) => q.id === key);
     if (!question || question.type !== TSurveyQuestionTypeEnum.FileUpload) continue;
diff --git a/apps/web/modules/api/v2/lib/question.ts b/apps/web/modules/api/v2/lib/question.ts
index cad3cd78a8..232b2d01a0 100644
--- a/apps/web/modules/api/v2/lib/question.ts
+++ b/apps/web/modules/api/v2/lib/question.ts
@@ -33,10 +33,11 @@ export const validateOtherOptionLengthForMultipleChoice = ({
   surveyQuestions,
   responseLanguage,
 }: {
-  responseData: TResponseData;
+  responseData?: TResponseData;
   surveyQuestions: TSurveyQuestion[];
   responseLanguage?: string;
 }): string | undefined => {
+  if (!responseData) return undefined;
   for (const [questionId, answer] of Object.entries(responseData)) {
     const question = surveyQuestions.find((q) => q.id === questionId);
     if (!question) continue;
diff --git a/packages/types/responses.ts b/packages/types/responses.ts
index 9d552ae752..0f42499b5c 100644
--- a/packages/types/responses.ts
+++ b/packages/types/responses.ts
@@ -325,9 +325,9 @@ export const ZResponseInput = z.object({
 export type TResponseInput = z.infer<typeof ZResponseInput>;
 
 export const ZResponseUpdateInput = z.object({
-  finished: z.boolean(),
+  finished: z.boolean().optional(),
   endingId: z.string().nullish(),
-  data: ZResponseData,
+  data: ZResponseData.optional(),
   variables: ZResponseVariables.optional(),
   ttc: ZResponseTtc.optional(),
   language: z.string().optional(),