How to add serial counter

Hi all,

Can you pls help me out Whether is their any option in PI 7.4 side  to add counter .

Means currently in my  scenario is from the ECC side we are using the serial counter field to add the counter ,

And now the issue is we are passing multiple Idocs from the ECC side and in PI we have to generate only 1 file ,In that way our counter is miss matching in the order . for example : In  ECC we are getting 10 idocs means we have to get only 1 count .??

Regards,

Sandhya