From which account should I enter a payment to my supplier? My client's payment was entered in Prepayments but I can't record pymnt to supplier from that account. Ta

Hello there, @shepysue.

Are you recording a retainer amount? If so you can create a liability account to get started in recording your funds in QuickBooks Online.

Here's how:

1. Hover your mouse to the Accounting, then click Chart of Accounts.
2. Select New.
3. Choose Current Liabilities as your Account Type and Trust Accounts - Liabilities for the Detail Type.
4. Enter the other details, then hit Save and close.

Once done, you can create a service item for the retainer and use the liability account you set up as its income account. From there, use a sales receipt to record the deposit.

 You can refer to this link for the detailed steps: Record a retainer or deposit. 

Also, I'm including this article for your other reference: How to view Retained Earnings account details.

 Or If it is just an early payment that you do not yet have a bill  and will be billed in the future you can create a cheque or expense to the creditors account.

If there's anything else that I can help you with, please let me know in the comments down below. Always around ready to help.