AUV1073W MAXIMUM ACTIVE SUBSYSTEMS EXCEEDED (1)

Explanation
 The current iteration of the product being started
would exceed the limit of one concurrently active subsystems on a
single z/OS® system. Startup
for the current iteration is terminated. 

User response
 If the current iteration of the product is needed,
shut down one of the already active subsystems and then restart the
current iteration. To display all currently active subsystems use
the "display,subsystems,all" command. 