Check the deployment pattern for Windows devices
Use the following chart to find the best deployment pattern for your devices, based on how you purchased them and their current state.
There are two deployment patterns.
Click each box to see the deployment flow for that pattern.

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With the automatic identifier generation feature, you do not need to prepare identifiers linked one-to-one with your managed devices in advance. Device identifiers (normally 6-digit numbers) are generated and assigned automatically at enrollment. This feature is well suited to setting up many devices at once.
Because devices are managed by identifier, the identifier cannot be changed once enrollment is complete and operation has started.
To use this feature, create a common provisioning package.
Automatically create devices with Windows common provisioning package authentication