diff --git a/src/pages/modifyManage/utils/handleEvent.ts b/src/pages/modifyManage/utils/handleEvent.ts
index e7f225ed..e6f8a853 100644
--- a/src/pages/modifyManage/utils/handleEvent.ts
+++ b/src/pages/modifyManage/utils/handleEvent.ts
@@ -183,7 +183,18 @@ export const calculatePerformancePeriod = (
 };
 
 // scheduleNumber 생성
-const scheduleNumbers = ["FIRST", "SECOND", "THIRD"];
+const scheduleNumbers = [
+  "FIRST",
+  "SECOND",
+  "THIRD",
+  "FOURTH",
+  "FIFTH",
+  "SIXTH",
+  "SEVENTH",
+  "EIGHTH",
+  "NINTH",
+  "TENTH",
+];
 
 export const getScheduleNumber = (index: number): string => {
   return scheduleNumbers[index] || `SCHEDULE_${index + 1}`;
diff --git a/src/pages/register/Register.tsx b/src/pages/register/Register.tsx
index 0f7523c9..3e113eea 100644
--- a/src/pages/register/Register.tsx
+++ b/src/pages/register/Register.tsx
@@ -238,10 +238,17 @@ const Register = () => {
             performanceImage: performanceUrls[index] || image.performanceImage,
           })),
         };
+        console.log(formData);
         try {
           await postPerformance(formData);
         } catch (err) {
-          console.error("공연 등록 중 오류 발생:", err);
+          console.error("공연 등록 오류:", err);
+          const errorMessage =
+            err?.response?.status === 401
+              ? "로그인 세션이 만료되었습니다.\n 다시 로그인 후 시도해주세요."
+              : "공연 등록을 실패했습니다.\n 다시 시도해주세요.";
+
+          openAlert({ title: errorMessage });
         }
       } catch (err) {
         console.error("파일 업로드 중 오류 발생:", err);
@@ -413,9 +420,9 @@ const Register = () => {
             />
           </InputRegisterBox>
           <S.Divider />
-          <StepperRegisterBox title="회차 수" description="최대 3회차">
+          <StepperRegisterBox title="회차 수" description="최대 10회차">
             <Stepper
-              max={3}
+              max={10}
               round={totalScheduleCount}
               onMinusClick={() => onMinusClick(setGigInfo)}
               onPlusClick={() => onPlusClick(setGigInfo)}
diff --git a/src/pages/register/RegisterMaker.tsx b/src/pages/register/RegisterMaker.tsx
index 933829e8..c76a7055 100644
--- a/src/pages/register/RegisterMaker.tsx
+++ b/src/pages/register/RegisterMaker.tsx
@@ -89,7 +89,7 @@ const RegisterMaker = ({
       </S.RegisterContainer>
       <S.FooterContainer>
         <S.FooterDivider />
-        <S.FooterInfo>공연진 상세정보는 선택사항이며, 이후 수정불가합니다.</S.FooterInfo>
+        <S.FooterInfo>공연진 상세정보는 선택사항입니다.</S.FooterInfo>
         <Button onClick={handleList} disabled={isButtonDisabled}>
           다음
         </Button>
diff --git a/src/pages/register/components/PosterThumbnail.tsx b/src/pages/register/components/PosterThumbnail.tsx
index 404fc3c1..8a77029b 100644
--- a/src/pages/register/components/PosterThumbnail.tsx
+++ b/src/pages/register/components/PosterThumbnail.tsx
@@ -54,7 +54,6 @@ const PosterThumbnail = ({ value, onImageUpload }: PosterThumbnailProps) => {
       <S.InputRegisterBox $marginBottom={2.8}>
         <S.InputTitle>포스터 썸네일</S.InputTitle>
         <S.InputDescription>한 장만 등록 가능합니다.</S.InputDescription>
-        <S.InputDescription $warning={true}>*포스터 썸네일은 수정불가합니다.</S.InputDescription>
         <Spacing marginBottom="1.4" />
         <S.FileInputWrapper>
           <S.HiddenFileInput
diff --git a/src/pages/register/utils/handleEvent.ts b/src/pages/register/utils/handleEvent.ts
index 612d10a6..7f556db1 100644
--- a/src/pages/register/utils/handleEvent.ts
+++ b/src/pages/register/utils/handleEvent.ts
@@ -195,7 +195,18 @@ export const calculatePerformancePeriod = (scheduleList: { performanceDate: Dayj
 };
 
 // scheduleNumber 생성
-const scheduleNumbers = ["FIRST", "SECOND", "THIRD"];
+const scheduleNumbers = [
+  "FIRST",
+  "SECOND",
+  "THIRD",
+  "FOURTH",
+  "FIFTH",
+  "SIXTH",
+  "SEVENTH",
+  "EIGHTH",
+  "NINTH",
+  "TENTH",
+];
 
 export const getScheduleNumber = (index: number): string => {
   return scheduleNumbers[index] || `SCHEDULE_${index + 1}`;