Delete the message queues if they are full:

 

1. Open Computer Management.
2. Expand Computer Management.
3. Expand Services.
4. Expand Applications.
5. Expand Message Queuing.
6. Expand Private Queues.
7. Expand eurngenerator.
8. Right click Queue Messages.
9. Select All Tasks.
10. Click Purge.
11. Click Yes.
12. Repeat the same steps for the eurns message queue. After purging both queues restart the business tier service.