AL code - change file name of PDF download

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Posted on by Samantha73

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Hi All

Currently when downloading reports such as invoice shows a standard name such as invoice (or document), is there a way to set the downloaded file name to something such as Invoice No 1234 etc

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Dynamics 365 Business Central migration

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CU02110650-0 4 on at

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Yi Yong 2,612 Super User 2026 Season 1 on at

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hello,

you will need to customize this.

there is a codeunit: Document-Mailing, OnBeforeGetAttachmentFileName function event you can subscribe to.

[EventSubscriber(ObjectType::Codeunit, Codeunit::"Document-Mailing", 'OnBeforeGetAttachmentFileName', '', false, false)] local procedure OnBeforeGetAttachmentFileName(var AttachmentFileName: Text[250]; PostedDocNo: Code[20]; EmailDocumentName: Text[250]; ReportUsage: Integer); var lrec_SIH: Record "Sales Invoice Header"; begin if ReportUsage = 2 then if lrec_SIH.Get(PostedDocNo) then AttachmentFileName := Format(lrec_SIH."Sell-to Customer No.") + '_' + Format(PostedDocNo) + '.pdf'; end;

ReportUsage is from enum 77 "Report Selection Usage".

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OussamaSabbouh 10,972 Super User 2026 Season 1 on at

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Hello,

Yes, you can change the downloaded file name of a report, but only by customizing it in AL.
Business Central does not allow this through standard setup.

How to do it (simple AL change)

In your report extension, override OnInitReport() or OnPreReport() and use:

Report.SetOutputFileName('Invoice No ' + Rec."No.");

For example:

reportextension 50100 MyInvoiceExt extends "Sales Invoice"
{
trigger OnInitReport()
begin
Report.SetOutputFileName('Invoice_' + "Sales Invoice Header"."No.");
end;
}

Now the downloaded file will appear as:

Invoice_1234.pdf

Regards,
Oussama Sabbouh

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RockwithNav 8,846 Super User 2026 Season 1 on at

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Not with the standard way out, you need to do a quick customization for this.

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Aman Kakkar 2,977 Super User 2026 Season 1 on at

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Hi,

Agreed with other experts, you will need some custom code to achieve this.

It’s best to make the logic setup-based, so if your naming convention changes in the future, you can simply update it from the front end without modifying the code again.

Hope this helps,

Aman K

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YUN ZHU 97,970 Super User 2026 Season 1 on at

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Hi, hope the following helps.

Business Central 2024 wave 2 (BC25): Set the default filename for the downloaded reports (Custom Filename For Report Export) – OnGetFilename event

https://yzhums.com/57401/

Thanks.

ZHU

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Rishabh Kanaskar 6,213 Super User 2026 Season 1 on at

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Hi,

There’s no standard setting for this, it requires AL customization.

Thanks

Rishabh

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