Can I edit a Journal after posting . If yes , please let me know the steps thanks Dr Ashraf

Yes, Dr Ashraf. You can edit a journal entry after creating it.

Let me guide you:

1. Click the New or Plus sign (+) button.
2. Select Journal entry.
3. Click the Clock icon beside the Journal entry header.
4. Select the journal entry you want to edit.
5. Make some changes.
6. Click Save and close. 

I'll add this article to better guide you with creating a journal entry: Create a journal entry in QuickBooks Online.

Feel free to get in touch with us if you have other concerns. We'd be pleased to work with you again. Keep safe!