Hi @Deepak, 
 

You can enter potential discount types and their corresponding default discount rates. The line discount percentage that is retrieved automatically by the system, based on the pricing functionality. Discounts in campaigns, agreements, price lists, customer basic data and customer hierarchy (if applicable) are taken into consideration.

You can follow below steps to apply Discount

1. Open the Sales Basic Data window.
2. Click the Sales Discount Types tab, and create a new record.
3. Enter the short code for the discount type in the Discount Type column.
4. Enter a description of the discount type in the Description column.
5. Enter the default discount percentage rate in the Discount % column.
6. Save the record 

How to locate Sales quotation discount in Print report

Example: 
1. Entered 20% discount in Sales Quotation Line

2. Print preview of Sales quotation

Hope this helps.