Error in TN pip document types


I am new to RosettaNet… we are going to upgrade over project from 4.x to 6.5 in this regards I import TN Document types from 4.x to 6.5 TN console, but in 6.5 TN console few document types (PIP related only) showing following error…

ERROR: The Java class for this document type was not found.

please help me to fix above issue