diff --git a/SCHG/schg.sql b/SCHG/schg.sql
index c88f1b1bd..625efba3e 100644
--- a/SCHG/schg.sql
+++ b/SCHG/schg.sql
@@ -662,7 +662,7 @@ IS
    WHERE fac_import_key = p_import_key
          AND i.prs_perslid_email = p.prs_perslid_email (+) ;
 
--- unieke oslogin vullen
+-- unieke oslogin binnen deze tenant
 CURSOR c_oslogin
 IS
   SELECT i.fac_imp_file_index,
@@ -680,6 +680,38 @@ IS
     FROM fac_imp_perslid i
 ORDER BY fac_imp_file_index;
 
+-- unieke oslogin buiten deze tenant
+CURSOR c_oslogin_b
+IS
+  SELECT w.fac_imp_file_index,
+         w.prs_perslid_oslogin,
+         w.prs_perslid_email,
+         w.prs_perslid_nr,
+         w.tenant_import,
+         v.tenant_prskaart
+    FROM (
+         SELECT i.fac_imp_file_index, i.prs_perslid_oslogin, i.prs_perslid_nr, i.prs_perslid_email, i.prs_kenmerk13 tenant_import   FROM fac_imp_perslid i WHERE i.prs_afdeling_naam IS NOT NULL AND i.prs_perslid_oslogin IS NOT NULL 
+         ) w,
+         (
+         SELECT p.prs_perslid_key,
+                p.prs_perslid_oslogin,
+                p.prs_perslid_email,
+               (SELECT kw.prs_kenmerklink_waarde
+                  FROM prs_kenmerklink kw
+                 WHERE     kw.prs_kenmerk_key = 1060
+                   AND kw.prs_kenmerklink_niveau = 'P'
+                   AND kw.prs_link_key = p.prs_perslid_key)
+                    tenant_prskaart                   -- het importbestand_schg in personenkaart
+          FROM prs_v_aanwezigperslid p,
+               prs_v_afdeling_boom  ab
+         WHERE p.prs_afdeling_key = ab.prs_afdeling_key
+           AND ab.prs_bedrijf_key = 21                        -- bedrijf Scharenborg Groep
+           AND prs_perslid_oslogin IS NOT NULL 
+         ) v
+   WHERE w.prs_perslid_oslogin = v.prs_perslid_oslogin
+         AND w.tenant_import <> tenant_prskaart
+ORDER BY w.fac_imp_file_index;
+
 
 BEGIN
   -- Import csv formaat - kolommen:
@@ -873,7 +905,7 @@ BEGIN
       LOOP
         BEGIN
 
-        v_errorhint := 'Dubbele oslogin checken';
+        v_errorhint := 'Dubbele oslogin checken - BINNEN ingelezen tenant';
         
         IF rec.check_dubbel IS NOT NULL
         THEN
@@ -890,7 +922,26 @@ BEGIN
         
         END IF;
         
-      END;
+        END;
+    END LOOP;
+
+    FOR rec IN c_oslogin_b
+      LOOP
+        BEGIN
+
+        v_errorhint := 'Dubbele oslogin checken - BUITEN ingelezen tenant';
+        
+           v_errormsg := rec.prs_perslid_email || ' (' || rec.prs_perslid_nr || ') - Niet aangemaakt ivm GEEN UNIEKE LOGIN' ;
+
+           UPDATE fac_imp_perslid
+              SET prs_kenmerk20 = 'oslogin_dubbel - andere tenant',
+                  prs_afdeling_naam = NULL -- zodat bij prs.update_perslid dit record niet verwerkt wordt en nog aparte error-melding krijgt
+            WHERE fac_imp_file_index = rec.fac_imp_file_index ;
+            
+        -- tracking
+        fac.imp_writelog (p_import_key, 'W', v_errormsg, v_errorhint);
+        
+        END;
     END LOOP;
 
 END schg_import_perslid;