在自定义日志名称中，只有前八个字符才有效，系统中已有其他日志使用了给定名称的前八个字符。给定名称: “X”，现有日志名称: “Y”。

Only the first eight characters of a custom log name are significant, and there is already another log on the system using the first eight characters of the name given. Name given: 'X', name of existing log: 'Y'.