+}
+
+=item apply_payments_and_credits
+
+Applies payments and credits for this customer. Takes a list of keys and
+values as parameter with the following keys:
+
+=over 4
+
+=item secret
+
+API secret
+
+=item custnum
+
+Customer number
+
+=back
+
+=cut
+
+#apply payments and credits
+sub apply_payments_and_credits {
+ my($class, %opt) = @_;
+ return _shared_secret_error() unless _check_shared_secret($opt{secret});