I'll help you fix the error in your journal entry, makeitsew29.
In QuickBooks, you cannot record a transaction that contains two A/P accounts. Saving these transactions will result in the message Warning: You cannot use more than one A/R or A/P account in the same transaction.
Let's fix this by setting up a clearing account so you can move money from one customer to another. This account, a Barter or Wash Account, typically maintains a $0.00 balance due to equal withdrawals and deposits. I'll guide you on how to do it.
- Go to the Lists menu and select Chart of Accounts.
- Click the Accounts drop-down arrow, then select New.

- Select the Bank radio button, then Continue.

- In the Account Name field, enter Clearing, Barter, or Wash Account.
- Do NOT enter an opening balance.
- Hit Save & Close.

Once done, create a journal entry to use the clearing account. Here's how.
- Click New Entry or select the + at the bottom of the list.
- Choose the date, and select AR or AP from which you are moving money.
- Enter the amount.
- Add the Clearing account.
- Hit Save.
- Create a second Journal Entry.
- Choose the Clearing Account.
- Select the AR or AP account to which you are moving money.
- Tap Save.
- In either Pay Bills or Receive Payments, link the Journal Entries together.
I hope this explanation helps. If you have any further questions or concerns, please let me know. I'm more than willing to help. Take care!