Virtual.Lab导入odb模型的时候出现错误，哪位帮忙看一下

大眼睛LOQK

Virtual.Lab导入odb模型的时候出现错误提示框，以下是提示框中的内容：
“Please note the following with regard to the current mode:(1) There are duplicated occurrences in the data sources which
cannot be merged.You can convert each set first to function, merge them into one function set, and then convert that one
back with a unction to Vector Conversion Case”
这是什么原因，哪位帮忙看一下？