In BUSY, you can enable e invocing for a specific voucher series. To do this follow these steps:
Step 1: Go to Administration and click on Configuration.
Step 2: Select Voucher Series Configuration then select the voucher type such as Sale, Sales Return etc.
Step 3: Then, select the voucher series for which you want to enable e invoicing, then click on Voucher Configuration.
Step 4: Here, you will see options of Input Transport Details, Generate E Invoice After Saving, set Y to enable that.
Note: In BUSY, Job work vouchers are pure inventory vouchers so there is no option to generate e invoice for them.