diff --git a/Model/Changes_2023_01_09.txt b/Model/Changes_2023_01_09.txt
new file mode 100644
index 000000000..b316383ce
--- /dev/null
+++ b/Model/Changes_2023_01_09.txt
@@ -0,0 +1,9 @@
+
+
+ALTER TABLE `servicecategory` ADD COLUMN `ProzentBudget` DECIMAL(18,10);
+
+ALTER TABLE `servicecategory` ADD COLUMN `ProzentStundenkonto` DECIMAL(18,10);
+
+ALTER TABLE `servicedescription` ADD COLUMN `ProzentBudget` DECIMAL(18,10);
+
+ALTER TABLE `servicedescription` ADD COLUMN `ProzentStundenkonto` DECIMAL(18,10);