Hello,
Please make sure in the Books you have created, Posting layer are different, as seen below, 1 is current and 2 is Tax

Now create 2 Journals, one in posting layer current and another in posting layer Tax


Now when we post an acquisition journal using the Tax journal, Trial balance of the current layer wont be effected
I posted the below acquisition entry using the Tax posting layer

Now i ran the Trial balance in the current layer, and both debit and credit entries of 5900 was not present
However if you run if for Tax posting layer, you can see the entries in Trial balance

Please try and Test environment and see if it works for you.
Thanks, Kaushik
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