WATS Server release 2019.2 (skyWATS.com service maintenance), all WCF Services will no longer be available. All service calls must be converted to use REST based service calls instead.
This also includes the ATML Service, which will no longer be supported. The ATML Format (NI Teststand generated atml) will be supported through a converter running on a WATS Client.
The ATML Converter will be available in WATS Client 5.1. For continued atml support, please upgrade to the latest WATS Client version: http://download.watssolution.com