@Rackliffe, Justin, Thanks for posting in Q&A. For Intune policy, it uses OMA-URI to set or change device setting. When it reaches the client, the CSP reads them and configures the Windows platform accordingly. Typically, it does this by adding, reading, or changing registry values. For the OMA-URI, it is provided by windows. Intune just uses it.
Based on my researching, a CSP is the interface between configuration settings that are specified in a provisioning document and configuration settings that are on the device. CSPs are similar to Group Policy client-side extensions in that they provide an interface to read, set, modify, or delete configuration settings for a given feature. Typically, these settings map to registry keys, files, or permissions. Some of these settings are configurable, and some are read-only. CSPs and GPOs have a very different implementation. Some CSPs do leverage the registry to store their configuration data, e.g., the Policy CSP uses the PolicyManage registry key, and some ultimately also change registry values associated with the equivalent group policy values. Different CSPs have different implementations There is no public or comprehensive documentation describing the details of the mapping. For me, I will research with some key value of the OMA-URI in registry key to find out the registry key for the OMA-URI I configured. And you can contact windows support to see if they can provide the mapping for you.
For the datatype, it is not direct mapping. while OMA-URIs bridge the gap between Intune and the registry, handling custom settings often involves nuanced conversions. For the data time, it may use string or binary to set the value. This depends on the registry key it changes and its background design.
Hope the above information can help.
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