MES Job card Terminal Feedback runtime total will be negative

I am getting the following message only for one worker constantly when reporting work through job card terminal . I have followed below steps

Go to Production control > Manufacturing execution > Job card terminal## - Confirguration - Production## - Badge id -XXX## - select a works order job and start## - Go back into job card terminal as same user - as above## - Go to Feedback tab## - Complete the full qty## - FOllowing Warning message received:

“Feedback run time in total will be negative.”

Before this warning message, there is another message appears as below.

Attempts are made to schedule production before today’s date or before materials are available. Scheduling direction is thus automatically changed to forward from today’s date.##

Can someone explain why the negative hours posting happen.