Например, такая ошибка:
тДолг=тДолг+ : {Справочник.Контрагенты.ФормаСписка.ФормаСписка.Модуль(194)}: SQL State: 40001 Native: 1205 Message: [Microsoft][ODBC SQL Server Driver][SQL Server]Transaction (Process ID 59) was deadlocked on lock resources with another process and has been chosen as the deadlock victim. Rerun the transaction.