diff --git a/apps/as/src/pages/sewer-bsc-plan/lib/sewer-bsc-plan-regist-schema.ts b/apps/as/src/pages/sewer-bsc-plan/lib/sewer-bsc-plan-regist-schema.ts
index 4dc0e56d6..19d0bdf90 100644
--- a/apps/as/src/pages/sewer-bsc-plan/lib/sewer-bsc-plan-regist-schema.ts
+++ b/apps/as/src/pages/sewer-bsc-plan/lib/sewer-bsc-plan-regist-schema.ts
@@ -84,7 +84,7 @@ export const sewerBscPlanRegistSchema = z.object({
   sewerBscPlanTmplntList: z.array(
     z.object({
       swtrmtFcltCd: z.string(),
-      swtrmtFcltNm: z.string().nullable(),
+      swtrmtFcltNm: z.string().nullish(),
       atchFileGroupId: z.string().optional(),
       atchFileNm: z.string().optional(),
       sewerBscPlanTmplntDtlList: z.array(tmplntDtlSchema).optional(),