Library Availability and electronic content
When electronic material records are pulled from the Library Catalogue, the $856 URL is extracted to become the URL of the resource in Talis. In the absence of Holdings data for these items, the Library Availability look-up is reported as unavailable. It might be preferable if the look-up script checked (against a set of rules) the presence of certain values in the Aspire record for the resource (such as a Web address or electronic resource format) and then not attempt the look-up, but instead present the end user a message such as: "This electronic material is available online. Access it via the Web Address in the item record".