Edwin,
I believe your requirement is to create automatic Journal Transaction batch from Receipt/Invoice Entry screen. If yes, You can launch the Journal Transaction Entry screen through Solomon Object Model and populate the data into JE Screen controls.
And also you can use the Transaction Import process to automate the JE. There is no need of manual intervention.
You should know about the Solomon Object Model & Transaction Import Process.You could found out the reference guide in UserGuides folder of Solomon Root folder if you already installed the user guides.
Hope this helps
Thanks,
Perumalsamy R