Unique character string which identifies an update record. The update key is in the update header.
----------------------分隔线上面是 SAP 标准文档中提供的说明
分隔线下面是我的翻译
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标识一条更新记录的唯一字符串,更新键在更新表头中。
Unique character string which identifies an update record. The update key is in the update header.
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