In automated accounting systems posting can be understood as the process to update (post) the details of transactions into the database, perform calculations, and update account balances impacted by the transaction(s). During the posting process, most accounting systems validate the Journal Entry for completeness and accuracy.
During the posting process, the system applies the values in the journal entry to the database resulting in accounting data getting appended to the numbers in the database. Journals once posted cannot be edited or modified. The ideal business process is to reverse these entries if any corrections need to be made. To verify accounts, total balances from subsidiary ledgers are compared to the totals in each general ledger account.