Ledger reconciliation is another name for account reconciliation, and that entry explains the process step by step, with the usual causes of breaks and how they are cleared. This page gives a short definition and explains where the alternative wording comes from.
Ledger reconciliation means comparing the balance of an account in a company's or bank's own books with another, independent source and explaining every difference. The source might be a bank statement, a payment processor's settlement report, or the detailed records that feed a summary account. The most common comparison is between the general ledger and a supporting subledger, for example checking that the total of individual customer balances equals the receivables figure in the main books.
The word "ledger" is favoured by people working with systems rather than with paper statements: finance engineers, payment operations teams and builders of core banking and wallet platforms, where the ledger is the system of record. Accountants tend to say "account reconciliation" or name the specific type, such as bank reconciliation or intercompany reconciliation. Whatever the name, unexplained differences are investigated and corrected through adjusting journal entries, and regular reconciliation is a basic internal control.