Claims are notices that you send when an issue that was expected has not been received by the library.
Make a selection from the drop down list. The "All Suppliers" count gives you a count of the total number of current item claims across all suppliers.
There are two ways to lodge a claim with the supplier:
The claim will be resolved once received status has changed. Search for the Subscription and then click "Serial receive" to locate the issue and change it's status.