Servlet [ParticipantPortTypePortImpl] and Servlet [CoordinatorPortTypePortImpl] have the same url pattern: [/WSAT10Service]. Related annotation information: annotation [@javax.jws.WebService(wsdlLocation=/wsdls/wsat10/wsat.wsdl, name=, portName=CoordinatorPortTypePort, endpointInterface=com.sun.xml.ws.tx.at.v10.types.CoordinatorPortType, serviceName=WSAT10Service, targetNamespace=http://schemas.xmlsoap.org/ws/2004/10/wsat)] on annotated element [class com.sun.xml.ws.tx.at.v10.endpoint.CoordinatorPortTypePortImpl] of type [TYPE]
Esse erro ocorre pois em suas dependências no projeto há algo em conflito com o Glassfish, normalmente bibliotecas do próprio glassfish, basta remove-las e utilizar somente bibliotecas referente ao WebService. Exemplo:
<dependencies>
<!--
Não utilizar essa dependência!
<dependency>
<groupId>org.glassfish.metro</groupId>
<artifactId>webservices-rt</artifactId>
<version>2.3</version>
<scope>compile</scope>
</dependency>
-->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-web-api</artifactId>
<version>7.0</version>
<scope>provided</scope>
</dependency>
</dependencies>
