To enable and enter transport details in the invoice , please follow below steps:
Step 1: Go to Administration and click on configuration.
Step 6: Choose the Voucher Series Configuration option and select the voucher type for which you want to generate eway bill and e invoice, such as sale, purchase, etc. Then, select the voucher series and click on Voucher Configuration.
Step 7: Here, you will see options of Input Transport Details, set Y to enable that.And then Transport details window will be appear.