If goods are to be shipped in two diffrent vehicle now two delivery chllan are to be created how to create diffrent delivery challan from single invoice ?

Good to see you here, maheshgranites.

For now, you can only print one delivery challan for each invoice. What you can do is create a separate invoice for each item with their shipping information. Then follow these steps to print the delivery challan:

1. Go to Sales < Customers.
2. Select the customer's name to display a list of their transactions.
3. Put a check mark on the invoices you want to print a delivery challan.
4. Under the Batch actions drop-down arrow, click Print Delivery Challan.
5. The print preview screen will open so you can select printing options, preview, and print.

Here's a sample screenshot for 

I have this article for reference: Can I print a delivery challan?.

If you have any follow-up questions related to this, or other concerns, please let me know by leave a comment below. Take care and stay safe.