Problems and solutions for installing WebSphere MQ
When you install AS4 Microservice, you are prompted for information about WebSphere® MQ. Two of the things you are prompted for are user name and password. These credentials are the user name and password for the box on which WebSphere MQ is installed. These credentials are not the credentials for accessing WebSphere MQ.
Symptoms
AS4 Microservice cannot access WebSphere MQResolving the problem
Verify that the WebSphere MQ user name and password that is used to configure WebSphere MQ are the user name and password to the server where WebSphere MQ is installed.