Z39.50 sources are maintained by the library providing access to their catalogue via Z39.50.

If a particular source isn’t returning expected results this generally means:

• the source library has changed their Z39.50 configuration
• the source library is currently experiencing an issue with their Z39.50 server
• the source library is no longer providing access to their catalogue via Z39.50

Please submit a ticket to Co-op Support with the following information:

• name of the source
• example ISBN for which you expect to see results
• a link to the library’s publicly available Z39.50 configuration (for example see the British Library’s Z39.50 Configuration)

Depending on the reason the source isn’t working Co-op Support will either update the configuration information or remove the source.