I've got an adjustment period 'Oct Adj' (31 Oct - 31 Oct) which overlaps the 'Oct' Period (1 Oct - 31 Oct). When running a balance sheet for the Oct Period, transactions posting in 'Oct Adj' period are included, Is this expected behaviour? Am i able to run a balance sheet for Oct without the adjustment entries?

Data should be different in Oct and Oct Adj periods . You may want to validate periods in your transactions

transactions definately have different periods - if i change the Oct Adj. period to have the date 1 Nov then the Oct period BS is as expected.

do you have multiple calendars? or is this the same calendar? If this is the same it is just for adjustment, not for seeing things side by side if you will. For that you would be better off using Adjustment Only book feature

i've only got the single calandar. I'll look into the adjustment only feature - thanks for your help