HP ProLiant Gen9 - Invalid Lockstep Memory Configuration

HP ProLiant server errors 53
207-Invalid Memory Configuration - Unsupported DIMM in Socket X
Possible Cause: Unregistered DIMMs or insufficient DIMM timings
Action: Install registered ECC DIMMs.
207-Memory Configuration Warning - DIMM In Socket X does not have Primary
Width of 4 and only supports standard ECC.
Advanced ECC does not function when mixing DIMMs with Primary Widths of x4 and x8.
Possible Cause: Installed DIMMs have a primary width of x8.
Action: Install DIMMs that have a primary width of x4 if Advanced ECC memory support is required.
208-Memory Board Error - This error could be the result of a bad or improperly
installed memory board or a system board issue
Possible Cause: The memory board is bad or improperly installed, or there is a system board issue.
Action: Reseat the memory board. If this does not resolve the issue, either replace the memory board or
replace the system board.
209-Online Spare Memory Configuration - No Valid Banks for Online Spare
Possible Cause: Two valid banks are not available to support an online spare memory configuration.
Action: Install or reinstall DIMMs to support online spare configuration.
209-Online Spare Memory Configuration - Spare Bank is Invalid
Possible Cause: Installed DIMMs for online spare bank are of a size smaller than another bank.
Action: Install or reinstall DIMMs to support online spare configuration.
209-Invalid Lockstep memory configuration
Possible Cause: The memory is not installed properly to support Lockstep mode.
Action: See the server documentation for supported Lockstep memory configurations.
209-Mirror Memory Configuration - Memory Sizes on boards X and Y do not match
Possible Cause: The overall size of two boards participating in a mirrored configuration does not match.
Action: Install or reinstall DIMMs to support mirrored mode.
209-RAID Memory Configuration - Memory Sizes on boards X and Y do not match
Possible Cause: The overall size of two boards participating in a RAID does not match.
Action: Install or reinstall DIMMs to support RAID mode.