Item Recall Email Notice goes out multiple times for same item.

Tested on Evergreen 3.0

When using hold driven recalls patrons get multiple "Item Recall Email Notice". The Hold Driven recall process looks at the Duration filed on the circulation to determine if the circulation is qualified for the recall process and send the patron an "Item Recall Email Notice" e-mail. When the process is complete the duration filed has not changed so when the hold is reprocessed (usually every 24 hours or so) the same circulation is checked and the notices goes out again to the patron.

Here were the settings used:

circ.holds.recall_fine_rules = "[0.00,\"1 day\",0.00]"
circ.holds.recall_threshold = "2 months"
circ.holds.recall_return_interval = "2 weeks"

When the process is run it checked for targeted items that have a duration of over 2 months. Qualifying circulations have the due date changed and a notice e-mailed to them. When the hold is re-processed the duration of the circulation is still the same so the same qualifying circulation is targeted and another notice is sent to the patron.

We feel that the patron should only get one notice per item that has been targeted in the process.