I am getting an error that an invoice already exists with the same GSTIN how do I fix this in BUSY
If you are getting an error that an invoice already exists with the same GSTIN that means
the party name you have mentioned in voucher its gstin is matching with some other party
so select the party master mentioned in voucher and click alter M to modify and click on
validate Gst number option if its shows correct then modify the other party gstin in which same
gst number exist otherwise modify the party gst number and save then resave the voucher again