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Dynamics 365 Community / Forums / Microsoft Dynamics AX (Archived) / Do not allow non-dupli...
Microsoft Dynamics AX (Archived)
Answered

Do not allow non-duplicates in string value, except empty strings

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Posted on by lukbel 282

Hi all

Running Dynamics AX 2012 R3 CU9

Have run into a business requirement where we would like to ensure SalesTable.PurchOrderFormNum is set to not allow duplicates.

Normally I would do this with an index, but the field is blank by default, and does not get filled in for every order. I think the index would treat all the blank values as "duplicates".

Is there a way to not allow duplicates, but exclude empty values?

Cheers

Luke

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  • Verified answer
    Sohaib Cheema Profile Picture
    Sohaib Cheema 49,679 Super User 2026 Season 1 on at

    Hi,

    one of the ways can be writing logic on validateWriteServer method of SalesTable.

    Create a new method on sales table as following

    public boolean PurchOrderFormNumAlreadyExists(CustPurchaseOrder _numberToFind,RefRecId _currentRecord)
{
    boolean         ret;
    SalesTable      lclSalesTable;
    ;
    ret = false;
    lclSalesTable.clear();
    select firstOnly PurchOrderFormNum from lclSalesTable
        where lclSalesTable.PurchOrderFormNum == _numberToFind
            && lclSalesTable.RecId != _currentRecord;
    if(lclSalesTable.PurchOrderFormNum)
    {
        ret = true;
    }
    return ret;
}

    Then call this method from  validateWriteServer  by writing following lines of code just above of, return ok;

    if(this.PurchOrderFormNum && this.PurchOrderFormNumAlreadyExists(this.PurchOrderFormNum,this.RecId))
    {
        ok = checkFailed('The Purchase Order form number already exists. Please use a new unique number.');
    }
  • lukbel Profile Picture
    lukbel 282 on at

    Thanks for all your help folks :)

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