How can i record the commission invoice from a supplier who is also a customer from where the sales has been generated just an example a deliveroo invoice

It's great to have you here in the QuickBooks Community, sehrish!

Your supplier's commission invoice can be recorded as a bill. Then, we'll create a barter transaction to use its balance to reduce the invoices you have given them.

We can start by creating a barter account.

1. Go to Settings ⚙ then select Chart of accounts.
2. Select New to create a new account.
3. Under the Account Type ▼ dropdown, select Bank.
4. Under the Detail Type ▼ dropdown, select Cash on hand.
5. Enter the account name. (ex. Barter Bank Account)
6. Select Save and Close.

Once you have a barter account, you can record the bill and your company's invoices to your supplier. You'll want to follow steps 2 and 3 in this article: Record a barter transaction.

On the other hand, we have helpful articles for QuickBooks should you need references in the future.

Should you need more help with your transactions, I'm only a comment away. Take care and have a good one!