Accruals are generated automatically from the leave type's accrual configuration, so a balance that looks "wrong" is usually correct once the rule is read carefully. To verify: open the leave type under Leave → Configure → Leave Rules and note the accrual amount, frequency, and any eligibility conditions (such as minimum service period). Then compare against the employee's entitlement under Leave → Entitlements and Usage Report. The credited figure should equal what the rule specifies for that employee's eligibility on the accrual date.