singlePlacementGroup

Should this Virtual Machine Scale Set be limited to a Single Placement Group, which means the number of instances will be capped at 100 Virtual Machines. Possible values are true or false.

Note: single_placement_group behaves differently for Flexible orchestration Virtual Machine Scale Sets than it does for Uniform orchestration Virtual Machine Scale Sets. It is recommended that you do not define the single_placement_group field in your configuration file as the service will determine what this value should be based off of the value contained within the sku_name field of your configuration file. You may set the single_placement_group field to true, however once you set it to false you will not be able to revert it back to true.