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Open the Plugin Maintenance form in Jiwa, and locate the REST API plugin and ensure it is enabled.
If not intending to send consignments via the Jiwa REST API, then it is not necessary for the Jiwa REST API service to be running, but the Machship plugin will still require the Jiwa REST API plugin to be present and enabled.
Import plugin
Open the Plugin Maintenance form in Jiwa, and locate any other freight integration plugins (such as IFS) and disable and save those.
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