duplicated accounting are created for AP invoices

Hi,

some ap invoices in our system have duplicated sla & gl journals.

for example:

     one invoice has only one ‘INVOICE VALIDATED’  sla event,but we found more than one sla journal entries are linked to this event, and these journals are identical,we think that means this invoice has been created accounting repeatedly.

what may cause this problem,and how should we deal with these duplicated journals, and how to prevent such error occurs again?

I uploaded one error invoice's diagnosis output,hope that will be helpful to understand our issue.

Thanks a lot.

He