ARM couple data sets

Ensure that you define the couple data sets required for ARM, and that they are online and active before you start any queue manager for which you want ARM support. WebSphere MQ automatic ARM registration fails if the couple data sets are not available at queue manager startup. In this situation, WebSphere MQ assumes that the absence of the couple data set means that you do not want ARM support, and initialization continues.

See the OS/390 MVS Setting up a Sysplex manual for information about ARM couple data sets.