Make field mandatory for existing feild

Business Central/NAV Developers Forum
1

I am trying to make some fields mandatory. For instance I would like the Customer PO feild to be mandatory in Sales Orders. I know that in the code you you just set the field to ShowMandatory = true; But how do you add that property to a core field?

2

add tesfield(“Customer PO”) when you release the sales order.

1 Like
3

So where in the code do I put this? Do I make a Page extension? So if I have this:
pageextension 90001 MyExtension extends “Sales Order”
{
layout
{
// Add changes to page layout here

}

actions
{
    // Add changes to page actions here
    
}

var
    myInt: Integer;

}

Where do i put it in there?

4

No… you have to create a Codeunit and subscribe to some event in “Release Sales Document” codeunit… for instance, subscribe to OnBeforeReleaseSalesDoc event.

Best regards.

5

Just to close the loop on this, assuming you’re using the External Document No. as the Customer PO No. field, the Codeunit in question would look something like this:

codeunit 50000 "DUG Custom Event Mgt."
{

    [EventSubscriber(ObjectType::Codeunit, Codeunit::"Release Sales Document", 'OnBeforeReleaseSalesDoc', '', false, false)]
    local procedure DUGOnBeforeReleaseSalesDoc(var SalesHeader: Record "Sales Header"; PreviewMode: Boolean; var IsHandled: Boolean; SkipCheckReleaseRestrictions: Boolean)
    begin
        SalesHeader.TESTFIELD("External Document No.");
    end;
}

Naturally you can also make it a more tailored message by instead of using TESTFIELD to do an if statement (i.e. if SalesHeader.“External Document No.” = ‘’ then error(ErrorMsgTxt):wink: or something to that effect.