SamOpenGroup - NtDoc

Native API online documentation, based on the System Informer (formerly Process Hacker) phnt headers
#ifndef _NTSAM_H

_Check_return_
NTSTATUS
NTAPI
SamOpenGroup(
    _In_ SAM_HANDLE DomainHandle,
    _In_ ACCESS_MASK DesiredAccess,
    _In_ ULONG GroupId,
    _Out_ PSAM_HANDLE GroupHandle
    );

#endif

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This function is a wrapper over an RPC method documented in the [MS-SAMR] specification.