Hello Priya Aleru,
Can you specify what you refer to by 'open documents'?
Are these open purchase orders / open sales orders or something else?
Open vendor invoices can be recorded either in the pending vendor invoice form with the help of the data management framework.
Alternatively, you can use ledger journals to get them imported.
Many companies prefer the ledger journal import probably because accountants are often more familiar with journals.
Also have a look at the article that Ada Ding shared!
Best regards,
Ludwig