bill raise without GST charged

Ashish Dubey (24 Points)

18 June 2019  
Dear Sir/Madam
I am a GST registered service provider and i have raised a bill without GST because of my turnover is less than 20 Lacs
and receiver has parked and post the bill without GST.
now how can I rectify the same
can I raise a supplementary invoices against this invoice ?

please suggest.

Regards,
Ashish Kumar