If you noticed a problem with tickets issued in Worldspan or Galileo, the reason for it may be stepped up communication security introduced by Travelport on 15/16 May 2018. From that daty TLS1.0 is no longer supported by Travelport and the required version is now TSL1.2.
This means that printers (HPM and GPM applications) running on Windows XP probably stopped working (Windows XP does not support TLS1.2). If you noticed such problems, we advice you to contact Travelport technical support.
Full explanation in the link below:
https://marketing.cloud.travelport.com/PCI_DSS_compliance