The InventoryInStorePickupMultishipping module provides business logic for In-Store Pickup functionality on Multishipping Checkout. In-Store Pickup Delivery is not available for Multishipping for now. Module provide plugin to disable active Multishipping mode when customer will visit the checkout.

This module is part of the new inventory infrastructure. The Inventory Management overview describes the MSI (Multi-Source Inventory) project in more detail.

This module is installed as part of Magento Open Source. Unless a custom implementation for InventoryInStorePickupMultishipping is provided by a 3rd-party module, the module cannot be deleted or disabled.