title: Websphere 8.5.5.2 with an MDB (Activation Specification) with Websphere MQ 7.1
body: <p>I have an application deployed on Websphere 8.5.5.2, The application has many MDBs, those MDBs are bound to response queues on Websphere MQ 7.1 using websphere "Activation specification". However, I always get this error in the console and MDBs couldn't consume any messages from the queues</p>
  
  <p>CWSJY0003W: MQJCA4004: Message delivery to an MDB 'null' failed with exception: 'endpoint needs to be activated.'.</p>
  
  <p>I tried the same application using SIB and things were perfect.</p>
  
  <p>What causing this error and make MDBs incapable to consume messages from the queues on MQ??</p>