Adjust double entry on purchase invoice

Hello can some of you help us wow can we adjust the double entry/encoding in purchase invoice due to book is already closed for the previous month.

Thank you

You need to furnish more information to obtain an answer. Is your situation just that you have locked the records? Are you wondering how to edit the purchase invoice? What exactly is the issue?

Yes this is right. Records are already locked and we want to edit some details in purchase invoice

Just temporarily unlock the file, edit the purchase invoice, and relock. Any reports you have saved for the period will be automatically adjusted.

is there any way that previous period will not be adjusted?

No. If you change your accounting inputs, the results will change. Whether these differences are visible will depend on what you are looking at, whether you use accrual or cash basis accounting, etc.