How could upload error file of gstr-1

Today I upload GSTR-1 for the month of Jul-2017 and successfully uploaded in site but after half an hour I show error file. so I download the same in my computer. The error is that three client gst no is wrong. so I want to rectify this gst number and want to upload this error file but the file can not be chaned gst number. so how can I change the same and upload in site please advise me.