diff --git a/migration/352a-trunk/323_MFreightCategory_Unique.sql b/migration/352a-trunk/323_MFreightCategory_Unique.sql
new file mode 100644
index 0000000000..5febe87036
--- /dev/null
+++ b/migration/352a-trunk/323_MFreightCategory_Unique.sql
@@ -0,0 +1,3 @@
+-- Make combination of AD_Client_ID and Value unique! 
+ALTER TABLE M_FreightCategory
+ ADD Constraint M_FreightCat_Value UNIQUE(AD_Client_ID, Value)
\ No newline at end of file
diff --git a/migration/352a-trunk/postgresql/323_MFreightCategory_Unique.sql b/migration/352a-trunk/postgresql/323_MFreightCategory_Unique.sql
new file mode 100644
index 0000000000..5febe87036
--- /dev/null
+++ b/migration/352a-trunk/postgresql/323_MFreightCategory_Unique.sql
@@ -0,0 +1,3 @@
+-- Make combination of AD_Client_ID and Value unique! 
+ALTER TABLE M_FreightCategory
+ ADD Constraint M_FreightCat_Value UNIQUE(AD_Client_ID, Value)
\ No newline at end of file