To add a signature to an existing credit note, follow the steps below.

• Select a credit note to open it
• Click on the 'S' sign to add a signature 
• A popup will appear on the screen 
• Add name, title, date, and signature.
• To add a signature, you can use the mouse pointer by adjusting the thickness. Also, users can upload the digital signature directly to an existing credit note. 
• Click on done to add signature

After adding a signature, you can check the same added to the concerned credit note.