AXAPTA - Find a table fields label value

There are two ways to find a table field's label value:

If fields label value derived from directly fields extended data type:
 
    if (curext()=="krc" && this.RBOInventItemGroupId == "")
        ret = checkfailed(strfmt("'%1' field cannot be empty!..",
            new SysDictType(extendedTypeNum(RBORetailGroupId)).label()));
If there is a special label value dedicated at table level:

    if (curext()=="krc" && this.RBOInventItemGroupId == "")
        ret = checkfailed(strfmt("'%1' field cannot be empty!..",
            new SysDictField(tablenum(WholeSalesCampaignGroup),
fieldnum(WholeSalesCampaignGroup,RBOInventItemGroupId)).label()));
 

AX 2012 - My New Field's Value Disappearing when Editing VendInvoiceInfoTable

I add a new field to VendInvoiceInfoTable When try to edit with VendEditInvoice form I saw my new field's value is empty. After a long research I found out Axapta copy source record to another record and edit this new record. Meanwhile Axapta skips my new field. Axapta uses table method copyFromHeader while copying. Add my new line:

    this.VendorRequestedWorkerEmail = _header.VendorRequestedWorkerEmail;
    //my new field
    this.myNewField     = _header.myNewField;

Problem overed. Same method valid for related VendInvoiceInfoLine table too.

AXAPTA client and server current datetime values

I published datetime value for just client before. Today's values for client and server:

warning(strfmt("Client datetime value: %1",DatetimeUtil::getSystemDateTime()));
warning(strfmt("Server datetime value: %1",DatetimeUtil::utcNow()));

AXAPTA Query: empty records, not empty records, use enum at query value

We have to put parameters when we want to do a complex addrange  at query. But it's not necessary with some situations:

Not empty records:

    qbds.addRange(fieldnum(custtable,name)).value(sysquery::valueNotEmptyString()) ;

Empty records:
    qbds.addRange(fieldnum(custtable,name)).value(sysquery::valueEmptyString()) ;
Records are not equal 10000:
    qbds.addRange(fieldnum(custtable,accountnum)).value(sysquery::valueNot("10000") ) ;

Ranges:

    qbds.addRange(fieldnum(custtable,accountnum)).value(queryrange("1","10000") ) ;

Enum:

            qbds.addRange(fieldnum(B_RMARequestTable, RefType)).value(queryvalue(B_RMAReqRefType::RepairJournal));