Schema (Opnum 9)

The Schema method is received by the server in an RPC_REQUEST packet. In response, the server returns an IAppHostCollectionSchema for the specified IAppHostElementCollection, which represents the schema and constraints of the specified collection.

 [propget] HRESULT Schema(
   [out, retval] IAppHostCollectionSchema** ppSchema

ppSchema: Contains the schema object.

Return Values: The server MUST return zero if it successfully processes the message that is received from the client. In this case, *ppSchema is not NULL. If processing fails, the server MUST return a nonzero HRESULT code as defined in [MS-ERREF]. The following table describes the error conditions that MUST be handled and the corresponding error codes. A server MAY return additional implementation-specific error codes.

Return value/code




The operation completed successfully.



One or more parameters are incorrect or null.