RE: Copy Sales Order's External Document No into Purchase Order's Vendor Invoice No
Hi,
Please declare below event in any Codeunit
[EventSubscriber(ObjectType::Codeunit, Codeunit::"Purch. Doc. From Sales Doc.", 'OnCreatePurchaseHeaderOnBeforeInsert', '', false, false)]
local procedure OnCreatePurchaseHeaderOnBeforeInsertPurch(var PurchaseHeader: Record "Purchase Header"; SalesHeader: Record "Sales Header"; Vendor: Record Vendor)
begin
PurchaseHeader."Vendor Invoice No." := SalesHeader."External Document No.";
end;