STP Reporting

Hi,

I have processed a wage run and recorded it in Myob to be sent to ATO via STP.

For some reason? in the STP reporting centre the wages run has come up with 

Gross Payment = zero (0) and PAYG withholding = zero (0)

I have sent an update event - status is 'sent'

What have I done to make this happened?

How am I able to correct the zero figure in STP to the correct wage amounts?

If I reverse and re-pay in Myob, I'm worried to ATO figures will be incorrect...?

regards, Donna