SamSetSecurityObject - NtDoc

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

_Check_return_
NTSTATUS
NTAPI
SamSetSecurityObject(
    _In_ SAM_HANDLE ObjectHandle,
    _In_ SECURITY_INFORMATION SecurityInformation,
    _In_ PSECURITY_DESCRIPTOR SecurityDescriptor
    );

#endif

View code on GitHub

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