The manifest file you download is specific to your instance. It contains the instance URL and configuration details that apply only to your environment. Using a manifest from one instance on another instance does not work and may cause errors.

If you work with more than one ServiceNow instance, for example, a development instance and a production instance — you have two options:

• Install a separate manifest for each instance. Download and install the manifest individually from each instance you need to connect to.
• Use the sideload option. If installing multiple manifests is not practical, use the sideload option to temporarily load the manifest for a different instance without installing it permanently.