Yes, you can auto create an invoice from a challan in BUSY by follow these steps:
Step 1: Take the latest backup of your data.
Step 2: Go to administration section then click on bulk updation
Step 3: Choose auto creation of invoice challan then click on invoice from challan.
Step 4: Mention the voucher type, series, challan type, starting and ending date.
Step 5: Select the party range then click on show challan and select the required challan.
Step 6: Mention the sales series, sales type then click on generate.