diff --git a/backend-node/src/services/batchSchedulerService.ts b/backend-node/src/services/batchSchedulerService.ts
index 5648b3a9..a8f755c3 100644
--- a/backend-node/src/services/batchSchedulerService.ts
+++ b/backend-node/src/services/batchSchedulerService.ts
@@ -306,6 +306,18 @@ export class BatchSchedulerService {
               mappedRow[mapping.to_column_name] = value;
             }
           }
+
+          // 멀티테넌시: TO가 DB일 때 company_code 자동 주입
+          // - 배치 설정에 company_code가 있고
+          // - 매핑에서 company_code를 명시적으로 다루지 않은 경우만
+          if (
+            firstMapping.to_connection_type !== "restapi" &&
+            config.company_code &&
+            mappedRow.company_code === undefined
+          ) {
+            mappedRow.company_code = config.company_code;
+          }
+
           return mappedRow;
         });