diff --git a/scripts/migration/normalize_service_locations.sql b/scripts/migration/normalize_service_locations.sql
new file mode 100644
index 0000000..0032d2e
--- /dev/null
+++ b/scripts/migration/normalize_service_locations.sql
@@ -0,0 +1,51 @@
+-- normalize_service_locations.sql — « rendre conformes » les adresses de service ERPNext via la base
+-- LOCALE rqa_addresses (Adresses Québec), sans détruire l'adresse originale (table de translation embarquée).
+--
+-- Pour chaque Service Location : on cherche la correspondance RQA par CODE POSTAL + NUMÉRO (clé sélective,
+-- indexée), on choisit la meilleure rue par similarité désaccentuée, puis on remplit :
+--   aq_address_id = rqa_addresses.id (clé de translation locale)   [⚠ id LOCAL, pas l'uuid AQ officiel]
+--   linked_address = adresse canonique conforme (address_full)
+--   address_validation_status = validated (sim≥0.20) | review (0<sim<0.20) | unmatched (aucun match)
+--   latitude/longitude RAFFINÉES seulement si validated ; address_line/city/postal_code INCHANGÉS (origine préservée)
+-- Idempotent : ne traite que les lignes encore 'pending' (re-run sûr). Les 2 tables sont colocalisées
+-- dans la db ERPNext _eb65bdc0c4b1b2d6 → tout se fait en SQL (pas d'aller-retour applicatif).
+\timing on
+BEGIN;
+
+-- Passe 1 : CODE POSTAL + NUMÉRO (forte) — couvre ~97 %.
+UPDATE "tabService Location" sl SET
+  aq_address_id = m.id,
+  linked_address = m.address_full,
+  latitude  = CASE WHEN m.sim >= 0.20 THEN m.lat ELSE sl.latitude  END,
+  longitude = CASE WHEN m.sim >= 0.20 THEN m.lon ELSE sl.longitude END,
+  address_validation_status = CASE WHEN m.sim >= 0.20 THEN 'validated' ELSE 'review' END,
+  address_validated_at = NOW(),
+  modified = NOW()
+FROM (
+  SELECT s.name, m.id, m.address_full, m.lat, m.lon, m.sim
+  FROM "tabService Location" s
+  CROSS JOIN LATERAL (
+    SELECT a.id::text AS id, a.address_full, a.latitude AS lat, a.longitude AS lon,
+           similarity(a.search_text, lower(unaccent(s.address_line))) AS sim
+    FROM rqa_addresses a
+    WHERE a.code_postal = replace(upper(coalesce(s.postal_code,'')), ' ', '')
+      AND a.numero = (regexp_match(s.address_line, '^\s*(\d+)'))[1]
+    ORDER BY similarity(a.search_text, lower(unaccent(s.address_line))) DESC
+    LIMIT 1
+  ) m
+  WHERE s.address_validation_status = 'pending'
+    AND s.address_line NOT IN ('', 'N/A', 'xxx')
+) m
+WHERE m.name = sl.name;
+
+-- Passe 2 : reste non résolu → 'unmatched' (pas de correspondance code postal+numéro).
+UPDATE "tabService Location"
+SET address_validation_status = 'unmatched', address_validated_at = NOW(), modified = NOW()
+WHERE address_validation_status = 'pending';
+
+-- Rapport
+SELECT address_validation_status AS statut, count(*) AS n,
+       count(NULLIF(aq_address_id,'')) AS avec_lien_aq
+FROM "tabService Location" GROUP BY 1 ORDER BY 2 DESC;
+
+COMMIT;