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If you're working on a V-Max with 5874, then you can use the -cons_exempt flag as below (excerpt from SE SRDF Family CLI Product Guide v7.0)
SRDF/A and the consistency exempt option
When an RDF group is supporting an active SRDF/A session, control operations
must be targeted at all device pairs in the session, or the session must first be made
inactive by suspending the links between all device pairs in the session before
attempting to control a subset of the device pairs.
The consistency exempt feature, available with Enginuity 5874, relaxes that
restriction. Devices marked consistency exempt can, in some cases, be controlled
independently of other devices in the active SRDF/A session. The
option flags devices targeted by the command as consistency exempt. Enginuity
automatically clears the consistency exempt status when the affected device pairs
have become consistent and two cycle switches have subsequently occurred.