diff --git a/src-modules/module/costage/hilfstabellen/costage_st_studien_aggr_fuellen.sql b/src-modules/module/costage/hilfstabellen/costage_st_studien_aggr_fuellen.sql
index 5fc8218..2217145 100644
--- a/src-modules/module/costage/hilfstabellen/costage_st_studien_aggr_fuellen.sql
+++ b/src-modules/module/costage/hilfstabellen/costage_st_studien_aggr_fuellen.sql
@@ -264,8 +264,8 @@ drop table if exists tmp_tsg2msg;
 select TSG.semester,
 TSG.st_studstamm_nr,
 TSG.st_studium_nr as st_studium_nr_tsg ,
-MSG.primaerflag_studien as primaerflag_studien_msg,
-MSG.beginn_datum as beginn_datum_msg,
+min(MSG.beginn_datum) as beginn_datum_msg,
+max(MSG.primaerflag_studien) as primaerflag_studien_msg,
 count(distinct MSG.st_studium_nr) as anzahl_st_studium_nr_msg
 into temp tmp_tsg2msg
 from tmp_studien_esg_tsg TSG,tmp_studien_msg MSG, costage_st_studiengaenge_mtsg MTSG
@@ -275,7 +275,7 @@ and TSG.semester=MSG.semester
 and TSG.st_studiengang_nr=MTSG.st_studiengang_nr_tsg
  and TSG.st_absz_nr=MSG.st_absz_nr
 and MSG.st_studiengang_nr=MTSG.st_studiengang_nr_msg
-group by 1,2,3,4,5
+group by 1,2,3
 ;
 
 --create index tmp_ix222 on tmp_tsg2msg(primaerflag_studien);
@@ -479,6 +479,7 @@ T.studienfach_sortierung,
 null::timestamp as  beginn_datum,
 null::timestamp AS gueltig_ab,
 null::integer as st_studienstatus_nr,
+null::integer as primaerflag_studien_msg,
 max(T.semester) as letztes_tsg_semester,
 max(T.fachsemester) as fachsemester
 into temp tmp_studien_msg_tsg_fehlend2
@@ -501,6 +502,15 @@ st_studienstatus_nr=S.st_studienstatus_nr
  and S.st_studstamm_nr=tmp_studien_msg_tsg_fehlend2.st_studstamm_nr
  and S.semester=tmp_studien_msg_tsg_fehlend2.letztes_tsg_semester 
  ;
+--Primärflag des MSG ermitteln, wichtig für die Ermittlung der Studiengang-Nr.
+update  tmp_studien_msg_tsg_fehlend2 set 
+primaerflag_studien_msg=M.primaerflag_studien
+from tmp_studien_msg M
+where tmp_studien_msg_tsg_fehlend2.st_studiengang_nr_msg=M.st_studiengang_nr 
+and tmp_studien_msg_tsg_fehlend2.st_studstamm_nr=M.st_studstamm_nr
+and tmp_studien_msg_tsg_fehlend2.semester=M.semester;
+
+
 
 --fehlende Semester nachtragen:
 insert into tmp_studien_tsg(semester,
@@ -540,7 +550,8 @@ hzb_land_nr,
 abm_art_s,
 fachsemester,
 studienfach_sortierung,
-letztes_tsg_semester
+letztes_tsg_semester,
+primaerflag_studien_msg
 )
 select distinct semester,
 semester_anfang,
@@ -579,7 +590,8 @@ hzb_land_nr,
 abm_art_s,
 fachsemester,
 studienfach_sortierung,
-letztes_tsg_semester
+letztes_tsg_semester,
+primaerflag_studien_msg
 from  tmp_studien_msg_tsg_fehlend2 F, costage_st_studiengaenge G
 where G.st_studiengang_nr=F.st_studiengang_nr_msg
  ;
@@ -659,6 +671,7 @@ abm_art_s,
 fachsemester,
 studienfach_sortierung,
 letztes_tsg_semester,
+primaerflag_studien_msg,
 'TSG'::char(10) as studiengangs_typ_kb,
 null::integer as fach_nr,
 null::integer as studiengang_nr,
@@ -796,12 +809,15 @@ into temp tmp_primaer_msg
 from tmp_studien2
 where studiengangs_typ_kb ='TSG'
 and st_studiengang_nr_msg is not null
-and primaerflag=1;
+--and primaerflag=1
+and primaerflag_studien_msg=1
+;
 
 --select * from tmp_primaer_msg;
 
 update tmp_studien2 set studiengang_nr=1 where primaerflag=0
 and studiengangs_typ_kb ='TSG'
+and primaerflag_studien_msg=1
 and exists (select st_studiengang_nr_msg
 from tmp_primaer_msg T
 where T.st_studstamm_nr=tmp_studien2.st_studstamm_nr