diff --git a/readme.md b/readme.md
index e60ac9a..18d61c3 100644
--- a/readme.md
+++ b/readme.md
@@ -51,5 +51,6 @@ running problem list
     - [ ] there is not currently any initial grouping to limit excess data from all the document# scenarios
 * general
     - [ ] clean up SQL generation to prevent injection
-    - [ ] **the sales data has to have a column for module and change ID, live sales data isn't going to work well**
     - [ ] how to handle a target value adjustment, which currency is it in?
+    - [ ] **the sales data has to have a column for module and change ID, live sales data isn't going to work well**
+        - [ ] need to target the live sales data, build build a whole new table to use it plus add version columns
diff --git a/routes/scale/gen_scale.sql b/routes/scale/gen_scale.sql
index 77e331d..dc47225 100644
--- a/routes/scale/gen_scale.sql
+++ b/routes/scale/gen_scale.sql
@@ -111,6 +111,14 @@ vscale AS (
     FROM
         basemix
 )
+,ilog AS (
+    INSERT INTO
+        fc.log (doc)
+    SELECT
+        req.j 
+    FROM
+        req
+)
 ,volume AS (
 SELECT
     $$||_clist_vol||$$
diff --git a/setup_sql/schema.sql b/setup_sql/schema.sql
index dfab167..2859997 100644
--- a/setup_sql/schema.sql
+++ b/setup_sql/schema.sql
@@ -1,7 +1,7 @@
 --assumes schema fc already exists
 
-DROP TABLE IF EXISTS fc.target_meta;
-CREATE TABLE fc.target_meta (
+--DROP TABLE IF EXISTS fc.target_meta;
+CREATE TABLE IF NOT EXISTS fc.target_meta (
     tname       text
     ,cname      text
     ,opos       int
@@ -15,7 +15,7 @@ CREATE TABLE fc.target_meta (
 );
 
 --ALTER TABLE fc.target_meta DROP CONSTRAINT IF EXISTS target_meta_pk;
-ALTER TABLE fc.target_meta ADD CONSTRAINT target_meta_pk PRIMARY KEY (tname, cname);
+ALTER TABLE fc.target_meta ADD CONSTRAINT IF NOT EXISTS target_meta_pk PRIMARY KEY (tname, cname);
 
 COMMENT ON TABLE fc.target_meta IS 'target table layout info';
 COMMENT ON COLUMN fc.target_meta.tname IS 'schema.table_name of target sales data table';
@@ -28,3 +28,10 @@ COMMENT ON COLUMN fc.target_meta.dtype IS 'data type of the sales table column';
 COMMENT ON COLUMN fc.target_meta.mastcol IS 'associated field from the master data table if it is different (oseas would refer to ssyr in fc.perd)';
 COMMENT ON COLUMN fc.target_meta.appcol IS 'supply column name to be used for application variables - (specifcy the order date column)';
 COMMENT ON COLUMN fc.target_meta.dateref IS 'reference to the relevant hard coded perd table column for dates';
+
+CREATE TABLE IF NOT EXISTS fc.log  (
+    id int GENERATED ALWAYS AS IDENTITY
+    ,doc jsonb
+);
+
+COMMENT ON TABLE fc.log IS 'forecast change log';