Mistake in filling CMP 08

I am a composite dealer and had paid the GST amount 1% of my turnover through the challan for the 3rd quarter.There after I filled up the form CMP 08 but by mistake in the schedule 3. summary of self assessed liability I forgot to fill up the amount in the Central Tax column. What should I do now. I will be filling my CMP 08 for the 4th quarter now