how do i edit a whatsapp message ?

 Yes, you can edit a WhatsApp message after it has been sent. 

To successfully edit a sent message, keep these requirements in mind:

• Time Limit: You can only edit a message within 15 minutes of sending it.
• Label: An "edited" tag will appear next to the message timestamp so the recipient knows it was changed.
• No Notification: WhatsApp will not send a new notification to the chat when you edit a message. 

How to Edit Your Message

1. Long-press (tap and hold) the message you want to change.
2. Tap
   Edit (On Android, you may need to tap the three dots in the corner first).
Type your new changes and tap the checkmark (or send button) to update it.