No Input Output for PCR in Time Schema

Hello Experts,

I have created a PCR which is been inserted in time schema ZM00 (a copy of TM00), but when I run time evaluation and look for the PCR, I can find only "Processing" tab of that PCR.. The input and output are missing... I believe it shud be like::

PCR

    input

    processing

    output

But in my case it is::

PCR

    processing

How come input and output are missing out?? can u guys plz help me in correcting this and making the PCR function correctly..

regards

Tahir