diff --git a/sql/v01/10.create.sql b/sql/v01/10.create.sql
index 9cb4cc4..1a4b5af 100644
--- a/sql/v01/10.create.sql
+++ b/sql/v01/10.create.sql
@@ -623,7 +623,8 @@ CREATE TABLE payment_variant (
     avnr          INTEGER NOT NULL,
 
     name          TEXT    NOT NULL,
-    date          TEXT    NOT NULL CHECK (date REGEXP '^[1-9][0-9]{3}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])$') DEFAULT CURRENT_DATE,
+    date          TEXT    NOT NULL CHECK (date          REGEXP '^[1-9][0-9]{3}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])$') DEFAULT CURRENT_DATE,
+    transfer_date TEXT             CHECK (transfer_date REGEXP '^[1-9][0-9]{3}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])$'),
     test_variant  INTEGER NOT NULL CHECK (test_variant IN (TRUE, FALSE)),
     calc_time     INTEGER,
 
@@ -715,8 +716,10 @@ CREATE TABLE payment_member (
     mgnr   INTEGER NOT NULL,
 
     amount INTEGER NOT NULL,
+    tgnr   INTEGER DEFAULT NULL,
 
     CONSTRAINT pk_payment_member PRIMARY KEY (year, avnr, mgnr),
+    CONSTRAINT sk_payment_member_tgnr UNIQUE (year, tgnr),
     CONSTRAINT fk_payment_member_payment_variant FOREIGN KEY (year, avnr) REFERENCES payment_variant (year, avnr)
         ON UPDATE CASCADE
         ON DELETE CASCADE,