10 September 2017
Don't be panic. if you sold taxable goods in July,2017 and you had submitted your GSTR 1 for July,2017 without mentioning GSTIN of your customer than in such situation your customer will be added details of such invoice, in his GSTR 2 of July,2017, which sold by you to him without mentioning your customers GSTIN and you have to confirm the same to enable him to take ITC against such invoice.