diff --git a/app/models/seed_generator.rb b/app/models/seed_generator.rb
index ff025b6f..da1e6284 100644
--- a/app/models/seed_generator.rb
+++ b/app/models/seed_generator.rb
@@ -14,9 +14,9 @@ class SeedGenerator < ApplicationRecord
       seed.current = current_no
       seed.save
     end
-    padding_len = 16 - prefix.length
+    padding_len = 12 - prefix.length
 
-    return prefix +"-"+ seed.current.to_s.to_s.rjust((16-prefix.length)+1,'0')
+    return prefix +"-"+ seed.current.to_s.to_s.rjust((12-prefix.length)+1,'0')
   end
 
   def self.new_receipt_no