could you try to add:
to META-INF/MANIFEST.MF file. I just thing that your deployment is missing dependency for this module.
I have added that Dependencies: com.ibm.mq entry in my META-INF/MANIFEST.MF file.Please see the attachement. could you suggest me how to prepare Module.xml depedencies for com.ibm.mq.allclient-22.214.171.124.jar file.Below is my module.xml content.
<module xmlns="urn:jboss:module:1.3" name="com.ibm.mq">
Actually the way how you're trying to send message to IBM MQ 9 is not directly the right one. I've checked doc: Configuring Messaging - Red Hat Customer Portal
The correct way is to deploy IBM MQ 9 resource adapter to EAP 7/Wildfly and use it. IBM MQ 9 rar contains all client jars and other functionality so any operation with IBM MQ 9 broker can participate in XA transaction and take advantage of Java EE features. Could you follow the steps and return if it works for you, please? It's 15 minutes job.