diff --git a/docs/migration/development/data-sync/01_part_mng_sync.sql b/docs/migration/development/data-sync/01_part_mng_sync.sql
new file mode 100644
index 00000000..64a01c30
--- /dev/null
+++ b/docs/migration/development/data-sync/01_part_mng_sync.sql
@@ -0,0 +1,67 @@
+BEGIN;
+
+CREATE TEMP TABLE part_mng_sync_stage (
+  part_no varchar,
+  material varchar,
+  heat_treatment_hardness varchar,
+  heat_treatment_method varchar,
+  surface_treatment varchar,
+  maker varchar,
+  part_type varchar,
+  spec varchar,
+  acctfg varchar,
+  odrfg varchar,
+  unit_dc varchar,
+  unitmang_dc varchar,
+  unitchng_nb varchar,
+  lot_fg varchar,
+  use_yn varchar,
+  qc_fg varchar,
+  setitem_fg varchar,
+  req_fg varchar,
+  unit_length varchar,
+  unit_qty varchar
+);
+
+\copy part_mng_sync_stage FROM '/tmp/part_mng_sync.csv' WITH CSV HEADER
+
+UPDATE part_mng P SET
+  material                = NULLIF(S.material, ''),
+  heat_treatment_hardness = NULLIF(S.heat_treatment_hardness, ''),
+  heat_treatment_method   = NULLIF(S.heat_treatment_method, ''),
+  surface_treatment       = NULLIF(S.surface_treatment, ''),
+  maker                   = NULLIF(S.maker, ''),
+  part_type               = NULLIF(S.part_type, ''),
+  spec                    = NULLIF(S.spec, ''),
+  acctfg                  = NULLIF(S.acctfg, ''),
+  odrfg                   = NULLIF(S.odrfg, ''),
+  unit_dc                 = NULLIF(S.unit_dc, ''),
+  unitmang_dc             = NULLIF(S.unitmang_dc, ''),
+  unitchng_nb             = CASE WHEN S.unitchng_nb = '' THEN P.unitchng_nb ELSE S.unitchng_nb::numeric END,
+  lot_fg                  = NULLIF(S.lot_fg, ''),
+  use_yn                  = NULLIF(S.use_yn, ''),
+  qc_fg                   = NULLIF(S.qc_fg, ''),
+  setitem_fg              = NULLIF(S.setitem_fg, ''),
+  req_fg                  = NULLIF(S.req_fg, ''),
+  unit_length             = NULLIF(S.unit_length, ''),
+  unit_qty                = NULLIF(S.unit_qty, ''),
+  is_last                 = COALESCE(P.is_last, '1'),
+  edit_date               = NOW()
+FROM part_mng_sync_stage S
+WHERE P.part_no = S.part_no;
+
+COMMIT;
+
+SELECT
+  COUNT(*) AS total,
+  COUNT(NULLIF(material,''))   AS material_filled,
+  COUNT(NULLIF(acctfg,''))     AS acctfg_filled,
+  COUNT(NULLIF(unit_dc,''))    AS unit_dc_filled,
+  COUNT(NULLIF(part_type,''))  AS part_type_filled,
+  COUNT(NULLIF(spec,''))       AS spec_filled,
+  COUNT(NULLIF(maker,''))      AS maker_filled,
+  COUNT(NULLIF(is_last,''))    AS is_last_filled
+FROM part_mng;
+
+SELECT part_no, material, spec, part_type, acctfg, odrfg, unit_dc, unitmang_dc, unitchng_nb, lot_fg, use_yn, qc_fg, setitem_fg, req_fg
+  FROM part_mng WHERE part_no = '000AN003000';
diff --git a/docs/migration/development/data-sync/README.md b/docs/migration/development/data-sync/README.md
new file mode 100644
index 00000000..6d400fd7
--- /dev/null
+++ b/docs/migration/development/data-sync/README.md
@@ -0,0 +1,69 @@
+# 개발관리 데이터 동기화 스크립트
+
+운영DB(`211.115.91.141:11133/waceplm`) → RPS DB(`11134/vexplor_rps`)로 마이그레이션 시 누락된 데이터를 part_no 매칭으로 채워 넣는 1회성 스크립트 모음.
+
+테이블 DDL/스키마는 [../ddl-extracted/](../ddl-extracted/)에서 별도 관리. 본 디렉토리는 **데이터 row 동기화** 전용.
+
+---
+
+## 01_part_mng_sync.sql
+
+**대상**: `part_mng` 8,176건 — 운영DB에서 채워져 있던 컬럼이 RPS 마이그레이션 시 누락된 사례.
+
+**왜 필요했나**: 2026-05-12 PART 상세 다이얼로그 검증 중 발견. 품번/품명만 표시되고 재료/규격/계정구분/조달구분/재고단위/관리단위/환산수량/LOT구분/사용여부/검사여부/SET품여부/의뢰여부 등 거의 모든 컬럼이 NULL. 운영DB 같은 part_no는 정상적으로 채워져 있어서 마이그레이션 누락이 원인.
+
+**동기화 대상 컬럼 20개**:
+- 재료/형상: `material` / `heat_treatment_hardness` / `heat_treatment_method` / `surface_treatment`
+- 기본: `maker` / `part_type` / `spec`
+- ERP 분류: `acctfg` / `odrfg` / `unit_dc` / `unitmang_dc` / `unitchng_nb`
+- Y/N: `lot_fg` / `use_yn` / `qc_fg` / `setitem_fg` / `req_fg`
+- 단위: `unit_length` / `unit_qty`
+- 상태: `is_last` (마이그레이션 시 NULL이라 PART_MNG.is_last='1' 조건의 모든 매퍼 쿼리가 0건 반환되던 부수 문제도 함께 수정)
+
+**실행 절차**:
+
+```bash
+# 1) 운영DB → CSV export (is_last='1' 인 8,243건)
+PGPASSWORD='waceplm0909!!' psql -h 211.115.91.141 -p 11133 -U postgres -d waceplm -c "\copy (SELECT part_no, COALESCE(material,''), COALESCE(heat_treatment_hardness,''), ..., COALESCE(unit_qty::text,'') FROM part_mng WHERE is_last='1') TO '/tmp/part_mng_sync.csv' WITH CSV HEADER"
+
+# 2) RPS 에 import + UPDATE FROM JOIN
+PGPASSWORD='vexplor0909!!' psql -h 211.115.91.141 -p 11134 -U postgres -d vexplor_rps -f 01_part_mng_sync.sql
+```
+
+**결과 (2026-05-12 실행)**:
+
+| 컬럼 | 동기화 전 | 동기화 후 |
+|---|---:|---:|
+| material | 0 | 301 |
+| acctfg | 0 | 8,172 |
+| unit_dc | 0 | 8,176 |
+| part_type | 639 | 703 |
+| spec | 0 | 7,466 |
+| is_last | 0 | 8,176 |
+| (전체) | 8,176 | 8,176 |
+
+**미동기화 (의도적 보류)**: 운영DB에만 있는 67건 (운영 8,243 - RPS 8,176). part_no 자체가 RPS 에 미존재. 신규 INSERT 별 작업 필요.
+
+**검증 SQL**:
+
+```sql
+-- 채움 비율
+SELECT
+  COUNT(*) AS total,
+  COUNT(NULLIF(material,''))  AS material_filled,
+  COUNT(NULLIF(acctfg,''))    AS acctfg_filled,
+  COUNT(NULLIF(unit_dc,''))   AS unit_dc_filled,
+  COUNT(NULLIF(part_type,'')) AS part_type_filled,
+  COUNT(NULLIF(spec,''))      AS spec_filled,
+  COUNT(NULLIF(is_last,''))   AS is_last_filled
+FROM part_mng;
+
+-- 샘플 행 (운영 스크린샷과 비교)
+SELECT part_no, material, spec, part_type, acctfg, odrfg, unit_dc, unitmang_dc,
+       unitchng_nb, lot_fg, use_yn, qc_fg, setitem_fg, req_fg
+  FROM part_mng WHERE part_no = '000AN003000';
+```
+
+**1:1 정합성**: 운영DB의 컬럼 값을 그대로 복사. NULL 인 운영 컬럼은 RPS 도 NULL 유지 (덮어쓰기 안 함). `unitchng_nb` 만 numeric 캐스팅.
+
+**재실행 안전**: idempotent — 같은 데이터로 다시 UPDATE 만 일어남.