account-financial-tools/account_netting/readme/USAGE.md

From any account journal entries view:

• Accounting/Journal Entries/Journal Items

select all the lines that corresponds to both AR/AP operations from the same partner. Click on Action > Compensate. If the items don't correspond to the same partner or they aren't AR/AP accounts, you will get an error.

On contrary, a dialog box will be presented with the result of the operation and a selection of the journal to register the operation. When you click on the Compensate button, a journal entry is created with the corresponding counterparts of the AR/AP operations.