4.2.2 Overwrite installation and upgrade installation
In any of the following cases, you can install JP1/DH - Server by overwrite installation or upgrade installation:
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When you install the same version of JP1/DH - Server by overwriting existing JP1/DH - Server
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When you upgrade the existing JP1/DH - Server to the newer version
When you upgrade the existing JP1/DH - Server to the newer version, if the path to the storage folder for delivery data exceeds 70 characters in length, change the folder to a different one with a name of 70 characters or shorter before the setup.