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This parameter indicates how many copies of each title should ideally be protected from weeding. Since the parameter can be set individually at the branches, it can be used to control which branch’s copies will be left after a title has been weeded.
The number of copies at a branch in excess of the branch’s parameter value is considered to be a surplus and will be weeded first (one copy at a time). Only if no branches have extra copies of the title, weeding of the number of copies within the amount each branch has specified for the parameter can be made so that branches end up with low stock levels.
If the parameter is, for example, set on 2 for a branch and the branch has 3 or more copies of the title to be weeded, then the branch’s copies will be considered on equal footing with other branch’s excess copies.
If a branch’s parameter is set on 2 and the branch has 2 or fewer copies of the title to be weeded, then the branch’s copies will not be eligible for weeding if other branches have excess copies.
If no branches have extra copies and the stock of the title still needs to be weeded, then the branches’ copies will be prioritized so that copies at branches with the “highest level of low stock” will be weeded first.
If the parameter is set on 0 for a branch, all of the branch’s copies are considered a surplus.
Please note: This parameter has no effect on the quantity of items that need to be weeded. Only the selection of a specific copy of a given title is affected.
See the description of weeding of the stock for a complete description of how a copy is selected for weeding.