In DB2 LUW V7.1, the size of the program identifier (PID) string increased from 40 bytes to 162 to enable the use of COLLECTION-ID's longer than eight characters. Because the PID is stored in each DB2 application when it is compiled, the DB2 ECM needs to generate a different PID structure depending on whether you are using DB2 LUW V7.1 or later.