In REP03 Profit and Loss Report module some of line items showing correct results but some are incorrect like headcount and car cost
please help to figure the issue .
The above module is summing up the data by using the SYS08 Employee Details Module line items. Also few of the formulas are driven by Leave Date and Start Date which are again in SYS08 module.
So, I would suggest you to check your SYS08 Module. Make sure the import has run successfully with correct date formatting and also without any failures, as missing entries can make the calcs go wrong.
A wise decision would be to follow each and every step which is been said to do in the training and never skip any part of it.
I hope it helps
Please check the referred module you might have missed some formula there or drill down and see where you have missed.