ora:20000 error in calling oe_order_pub.Process_order

Hello,

I sometimes get the below error while I use the procedure which internally calls oe_order_pub.

Error:ora:20000 error as shown below in calling the procedure using form personalisation:

RAISE_APPLICATION_ERROR (-20000, 'Error Occurred while cascading the address from header to lines');

In the called procedure below code been used and the error showing at line 297

RAISE_APPLICATION_ERROR (-20000, 'Error Occurred while cascading the address from header to lines');

FOR i IN 1 .. l_msg_count

   LOOP

      oe_msg_pub.Get (p_msg_index      => i

                     ,p_encoded        => fnd_api.g_false

                     ,p_data           => l_msg_data

                     ,p_msg_index_out  => l_msg_index_out