Transaction Timeout - what cud be the reason ??

Hi,

In the customer system, the following is the scenario.

A SAP Provided transaction (CV04N) times out in Production, whereas for the same parameters, it runs fine in the test environment.

The number of records in both the systems are the same.

The value of the parameter 'rdisp/max_wprun_time' is also the same in both (600).

Need help on what factors would be resulting in this time out in Production system ? Please suggest as to where/what i should be looking at ?

Regards,

Prashanth.