AX2012 审批流流转到已停用的域账号导致审批流停止

AX 2012 中当审批流流转到某个节点时，如果在该节点的审批人的域账号被停用，审批流将会停止，会报如图的错误：

要解决这个问题，得修改标准功能，需要修改SysWorkflow和SysWorkflowWorkItem两个类

public server static void fault(
    Microsoft.Dynamics.AX.Framework.Workflow.Runtime.WorkflowContext _workflowContext,
    WorkflowUser _user,
    WorkflowFaultMessage _faultMessage)
{
    UserConnection connection;
    SysWorkflowFaultTable faultTable;

    setPrefix(classStr(SysWorkflow) + '-' + staticMethodStr(SysWorkflow, fault));

    new InteropPermission(InteropKind::ClrInterop).assert();

    if (CLRInterop::isNull(_workflowContext))
    {
        throw error(strFmt("@SYS104836", staticMethodStr(SysWorkflow, fault), varStr(_workflowContext)));
    }
    // CR <Hotfixed> VAR on 2016-07-26 at 15:04:07 Changed by Kim -Begin
    if (SysWorkflowTable::find(CLRInterop::getAnyTypeForObject(_workflowContext.get_WorkflowCorrelationId())).RecId != )
    // CR <Hotfixed> VAR on 2016-07-26 at 15:04:07 Changed by Kim -End
    {
        if (appl.ttsLevel() == )
        {
            SysWorkflow::internalFault(_workflowContext, _user, _faultMessage);
        }
        else
        {
            // We are in a nested transaction so we want to do the fault even if the outer transaction
            // is rolled back so we do it on a sperate connection.
            connection = new UserConnection();
            faultTable.setConnection(connection);
            if (!SysWorkflowFaultTable::exist(_workflowContext.get_RootCorrelationId()))
            {
                connection.ttsbegin();
                faultTable.RootCorrelationId = _workflowContext.get_RootCorrelationId();
                faultTable.FaultMessage = _faultMessage;
                faultTable.User = _user;
                faultTable.insert();
                connection.ttscommit();
            }
        }
    }

    CodeAccessPermission::revertAssert();
}

// EDD number Hotfix
// EDD description Hot fix
// Layer var
// Model VAR Model
//
// Developer              Date                      Comments
// --------------         -----------------         ------------------------------
// Kim.Ding              三月-22-2016 13:46:01      Created
public static boolean TEC_checkADUser(UserId _userId)
{
    xAxaptaUserManager  mgr;
    xAxaptaUserDetails  det;
    UserInfo            userInfo;
    boolean             ok = true;
    ;

    mgr = new xAxaptaUserManager();
    select userInfo where userInfo.Id == _userId;
    det = mgr.getDomainUser(userInfo.NetworkDomain,userInfo.id);
    if (det == null)
    {
        ok = false;
    }
    return ok;
}

/// <summary>
/// Microsoft internal use only.
/// </summary>
/// <param name="_workItemContext">
/// An instance of the <c>CLRObject</c> class.
/// </param>
/// <param name="_isClaimed">
/// A <c>WorkflowWorkItemClaimed</c> value.
/// </param>
/// <returns>
/// A <c>recId</c> value.
/// </returns>
private server static RecId create(
    Microsoft.Dynamics.AX.Framework.Workflow.Runtime.WorkItemActivityContext _workItemContext,
    WorkflowWorkItemClaimed _isClaimed)
{
    .....

    userContext = _workItemContext.get_User();
    user = userContext.get_UserId();
    // CR <Hotfix> VAR on 2016-03-22 at 13:49:48 Changed by Kim -Begin
    if (!SysWorkflowWorkItem::TEC_checkADUser(user))
    {
        return ;
    }
    // CR <Hotfix> VAR on 2016-03-22 at 13:49:48 Changed by Kim -End
    autoDelegators = userContext.get_Delegators();
    sysWorkflowDocument = SysWorkflowDocument::newDocument(
            SysWorkflowConvert::toXppWorkflowContext(workflowContext),
            versionTable.workflowTable().TemplateName,
            user);

    ....

}