A DLPAR memory operation was attempted and failed. Given the following information, what is the likely caused

High memory utilization on the source LPAR affects performance but does not prevent the hypervisor from reallocating memory pages away from the source partition.

A timeout is a possible symptom of RMC or network issues but is not the likely root cause when a configuration boundary has been reached.

In DLPAR operations, each partition has a maximum memory setting defined in its profile that acts as a hard ceiling; if the destination LPAR's current allocation plus the incoming memory block exceeds this maximum, the HMC will reject the operation before any memory is moved. This setting must be raised in the partition profile to allow the dynamic memory addition to succeed.

RMC daemon communication failures would cause DLPAR commands to not reach the partition at all, resulting in a connectivity or timeout error rather than a memory boundary failure.

The source LPAR minimum memory setting being too high would block removing memory below that floor, but this is a source-side constraint, not the cause described as most likely here.

The source LPAR maximum memory setting limits how much memory can be added to the source, not removed from it; a low maximum on the source does not prevent outbound memory moves.