What is Sub-Account ledger and why is this used?

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http://www.covesys.net/streamv-erp-help/default.htm?turl=generalledgervssubledgertransactionprocessing.htm

subledger accounts come from all the commerial doccuments such as, purchase request, purchase order, reception/ delivery documents, invoice. and reciprocally for the sales documents. you can find in these documents all detailed informations about the tranaction

when there is any movement of validation of these documents, automated bookings and  accounts movement are then generated, so we may have inventory  accounts debit or credit, revenues /receivables, charges /payables ... etc.

most of strong accounting softwares such ( like SAP)  don't allow manual bookings, so you have automated bookings and trial balance generated automatically.

 the use  of the sub-ledger accounts is to check and reconcile with the accounts and this is a very important work to do , if they are not reconciled you can not make your accounts closing.

Sub-Account Ledgers are more precise break-up detail of particular account within the main account and it is used to focus on particular data. For example Account Receivable is the main account and sub-account is a particular party account. Then anybody can easily understand or track what is the outstanding on particular party within the main account or anybody can directly focus on particular party account by accessing sub account.

It is a classification to give you details. For example, under Accounts Receivable you may find classifications like customer accounts, advances to contractors, miscellaneous AR and so on.

it is the subsidiary leger account to general ledger Sales ledger will be convertered in A/R GL and so on