GST number quoted in the E- Invoice and E-way Bill

Dear Sir,

I had a query regarding by clerical mistake  wrong GST number quoted in the E- Invoice and E-way Bill. We already filed monthly GSTR-1 return in the GST Portal. For month of February'20, now Customer asking to change GST Number in the E-Invoice. how can change e-invoice then customer avail GST input tax credit and second issue is with e-way bill when material already dispatched. Kindly suggest what can we do then we and customer will not face any litigation in future.