[求助]加图层时提示"Warning, inconsistent extent"，原因何在？

加图层时提示

"Warning, inconsistent extent！

One or more of the added layers has an extent that is not consistent with the associated spatial reference information.

Reprojecting the data in such a layer may lead to unexpected behavior. Use ArcCatalog to confirm the spatial reference is correct and adjust if necessary"

（备注：数据的Geographic coordinate system name: GCS_Assumed_Geographic_1）

为什么会出现这样的信息提示？这样会对数据有影响吗？

如果有影响将来的使用，请问我该采取什么方式？如何进行adjust?