In order to file GST Return in India, We require to submit sales data in specify format provided by government. For this we require following type of sales invoices export data.
Here billing address and GSTIN field is achieved by adding a custom field in sales invoice and it is require to add both fields in each and every sales invoice.
Please suggest how can we add this columns without using custom field (i.e. by customer name it will directly show the address and GSTIN for that customer)