amendment of invoice

Nanda Kansara (36 Points)

28 June 2019  
can an invoice dated 03/12/2018 being B2B but inadvertently entered as B2C in GSTR1 for the quarter December 2018, which pertains to FY. 2018-19 be amended as on today ie. 28/06/2019 and how? kindly provide guidance.