Welcome to the Community, me64.
Suppliers and transactions will show on the Taxable Payments Annual Report (TPAR) if you've ticked Include the transaction in my annual TPAR.
We don't have an option to tick Include the transaction in my annual TPAR on a journal entry. So as a workaround, you can create an expense or bill for your supplier if you would like to have it included on your TPAR.
For more information, you can also check on this article: What you need to know about the Taxable Payments Annual Report (TPAR).
Let us know if you have any questions. We're here to help.
