Hello Josephine Alvina Luwia,
I hope you are doing well

Fix: Missing Internal Transfer Button — Odoo v18
Most likely cause: Only one bank/cash journal exists. Odoo hides the button when there's no second journal to transfer to.                                                                                                                                                                          
Fix:
- Go to Accounting → Configuration → Journals

- Ensure you have at least 2 bank/cash journals configured
- The Internal Transfer button should reappear

I hope this information helps you

Thanks & Regards,
Kunjan Patel

Hi,

Accounting Module - >Dashboard -> Transaction in journal/ New button in Journal.