diff --git a/db_scripts/diff/15421.down b/db_scripts/diff/15421.down
new file mode 100644
index 00000000..e5329da8
--- /dev/null
+++ b/db_scripts/diff/15421.down
@@ -0,0 +1,9 @@
+USE billing;
+
+ALTER TABLE billing_profiles DROP COLUMN prepaid_library;
+
+UPDATE provisioning.voip_preferences SET description = NULL
+  WHERE attribute = 'prepaid';
+UPDATE provisioning.voip_preferences SET description = "The prepaid billing interface for customer with prepaid billing profile."
+  WHERE attribute = 'prepaid_library';
+
diff --git a/db_scripts/diff/15421.up b/db_scripts/diff/15421.up
new file mode 100644
index 00000000..d3d4e2a2
--- /dev/null
+++ b/db_scripts/diff/15421.up
@@ -0,0 +1,9 @@
+USE billing;
+
+ALTER TABLE billing_profiles ADD COLUMN prepaid_library ENUM('libswrate', 'libinewrate') NOT NULL DEFAULT 'libswrate';
+
+UPDATE provisioning.voip_preferences SET description = "Deprecated, no longer used by the system."
+  WHERE attribute = 'prepaid';
+UPDATE provisioning.voip_preferences SET description = CONCAT(description," Deprecated, no longer used by the system.")
+  WHERE attribute = 'prepaid_library';
+