If a hold cannot be placed Evergreen will return the message "Hold was not successfully placed". This will be accompanied by a reason why the hold cannot be placed and in some cases the option to override.

Problem: The patron has reached the maxiumum number of holds - This indicates the patron has reached the maximum number of items they can have on hold at a time based on the library’s hold policies.

Problem: All available copies are temporarily unavailable at your pickup library. Placing this hold could result in longer wait times. - This indicates that the item is under age-based hold protection set through the Holdings Editor and cannot currently fill holds at your library. If you override and place the hold it will eventually be filled when the item is no longer protected.

Problem: Holds are not allowed on this item by library’s policy - This indicates that the item is under age-based hold protection set through the Hold Policies and cannot currently fill holds at your library. It can also indicate that the library has blocked holds placed by a particular patron type or on items using a particular circulation modifier through their hold policies.