CAllCrmActivity::CheckUpdatePermission

static function CheckUpdatePermission($ownerType, $ownerID, $userPermissions = null)
{
	$ownerTypeName = is_numeric($ownerType)
		? CCrmOwnerType::ResolveName((int)$ownerType)
		: mb_strtoupper(strval($ownerType));

	if(!is_int($ownerID))
	{
		$ownerID = (int)$ownerID;
	}

	$permissionEntityType = CCrmPerms::ResolvePermissionEntityType($ownerTypeName, $ownerID);
	return CCrmAuthorizationHelper::CheckUpdatePermission($permissionEntityType, $ownerID, $userPermissions);
}