diff --git a/src/Quiz/quiz.schema.ts b/src/Quiz/quiz.schema.ts
index 1c6c4c2..b391d6f 100644
--- a/src/Quiz/quiz.schema.ts
+++ b/src/Quiz/quiz.schema.ts
@@ -170,7 +170,13 @@ export class QuizSchema extends PothosSchema {
         type: this.quiz(),
         args: {
           data: t.arg({
-            type: this.builder.generator.getCreateInput('Quiz', ['id', 'centerMentorId', 'createdAt', 'updatedAt']),
+            type: this.builder.generator.getCreateInput('Quiz', [
+              'id',
+              'centerMentorId',
+              'createdAt',
+              'updatedAt',
+              'service',
+            ]),
             required: true,
           }),
         },
@@ -184,12 +190,18 @@ export class QuizSchema extends PothosSchema {
           if (!args.data) {
             throw new Error('Data is required')
           }
-
+          if (!args.data.service?.connect?.id) {
+            throw new Error('Service ID is required')
+          }
+          args.data.centerMentor = {
+            connect: {
+              mentorId: ctx.http.me.id,
+            },
+          }
           return await this.prisma.quiz.create({
             ...query,
             data: {
               ...args.data,
-              centerMentorId: ctx.http.me.id,
             },
           })
         },