You First need to look at the Control Group Attributes (Option 8 on the WRKCTLGBRM screen). It could mention *BKUPCY and than you need to look at the Backup Policy. This in turn could refer to *SYSPCY and in that case look at the system policy. (WRKPCYBRM *SYS or WRKPCYBRM *BKU)
On the control group you can specify the devices to use. Have you done an INZBRM *DEVICE and added the new device into the BRMS Configuration ?
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