JSON schema is used to describe the attributes and values in the xApp descriptor JSON file. The xApp onboarding process verifies the types and values of the xApp parameters in the descriptor.
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The schema file consists of two parts: sections that are static and cannot be changed for different xApp, and xApp specific controls section.
When an operator is onboarding an xApp that defines a control section, he/she will provide the controls section schema with together with the xApp descriptor.
The xapp_onboarder will combine the schema files into one.
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