Indicates whether there is a potential for channels being lost when failing to the backup or when switching back to a primary due to a mixture of 2x4 and 2x8 QAM Modules. Indicates whether RF redundancy is unavailable due to a 4x4 QAM Module installed. A 2x4 QAM Module is capable of supporting a maximum of 4 channels per RF port. A 2x8 QAM Module is capable of supporting a maximum of 8 channels per RF port. The number of channels enabled (apexQamRfConfigNumChannelsEnabled) is not considered. 'notApplicable' - QAM RF Redundancy is disabled. 'noMismatch' - Indicates no channels would be lost because there is no mismatch. 'backup2x4' - Indicates a loss of channels could occur on failover to the backup because the backup RF Port is in a 2x4 module and at least one primary RF Port is in a 2x8 module. 'primary2x4' - Indicates a loss of channels could occur on switch- back from the backup to the primary because the backup RF Port is in a 2x8 module and the primary RF Port is in a 2x4 module. This would occur if the failed 2x8 primary is replaced with a 2x4. 'any4x4' - Indicates a 4x4 QAM Module is installed in any slot and RF Redundancy is not available. Failover and/or switchback are suspended until the 4x4 is replaced.