Item is returned to the Polaris lending library

The patron from the borrowing library returns the item, the library ships the item back to the Polaris lending library, and INN-Reach sends an Item Shipped API message which initiates the following processes in Polaris:

The returned INN-Reach item arrives at the lending library where it is checked in, and the following events occur:

In the following situations outside the normal workflow, you may see a message when you attempt to check in an item at the lending library:

The system prompts This INN-Reach item has already been checked in and declared shipped. Do you still want to ship this item?