Suppressing an item on the OPAC means that specific item records of your choosing will be hidden on the patron side of Koha.
There are a variety of reasons for suppressing an item on the OPAC and the procedure for suppressing an item can be slightly altered for different circumstances. These instructions will be a general overview of the suppression function, using the Withdrawn authorised value in the example.
Most systems will have one or two statuses, withdrawn and not withdrawn. It is possible to add more however so the table may vary somewhat from library to library. Multiple Withdrawn statuses can be useful if you want to inform staff of why the item has been withdrawn or if you want the item to still appear on the OPAC but with a status informing patrons that the item is out of circulation.
Take note of both the authorized value (numerical code) and the description (name) of the status you want to suppress from the OPAC. In this example we will be using the authorized value of 1, which has a description of withdrawn.
Go to KOHA Administration > Global System Preferences and search for OPACHiddenItems.
The rules for which items should be suppressed from the OPAC will need to be manually typed into this free text box.
There is a link in the system preference to a wiki that explains the syntax of the rules in detail, however, the basic structure of these commands will be field: [value].
Field refers to a specific field in the item record, eg. Collection Code, Damaged status or in this example, Withdrawn status.
Value is the content that can be put into the defined field.
To suppress items marked with a status of Withdrawn, type the following into the OPACHiddenItems box.
withdrawn: [1]
The exact spacing and characters must be used or the item won’t be suppressed.
It is possible to enter multiple values in the square brackets. For example withdrawn: [1,2] means where the withdrawn field contains 1 OR 2.
Once the box is filled in click Save all OPAC preferences.
Once the OPACHiddenItems system preference has been set, it is neccessary to set the OPACSuppression system preference. To get to this system preference, search for OPACSuppression under KOHA Administration > Global System Preferences.
First, find the item in the catalogue to be suppressed.
On the staff side, click on the Edit button beside the specific item in the record to be suppressed.
Go to the 0 - withdrawn status field and choose the withdrawn status that matches the numerical option you input in the OPACHiddenItems system preference. The withdrawn status will come up as the name of the status. So in this example, the correct withdrawn status will be Withdrawn.
After choosing this status hit save at the bottom of the page.
The item record on the staff side now has a status of Withdrawn.
And the item has stopped appearing on the OPAC.