Have you seen the new “Chart of Accounts Overview” in BC 2021 Wave 2?

With Business Central 2021 Wave 2 there is a new page to inspect the chart of accounts.

Search for “Chart of Accounts Overview”.

This new page displays the chart of accounts in a tree structure.

To create a list page with a tree structure a developer would need to make true the property “ShowAsTree” which can be found under Repeater control:

The columns in the Overview page are similar to the ones in the original Chart Of Accounts list page.

The new page is more compact:

  • less fields: just the Balance, Net Change, “Income/Balance”, “Account Subcategory” “Account Type” and Totaling are available
  • less lines: “End-Total” lines are out

Let’s have a look at how the “Begin-Total” line looks like for Assets in the classic “Chart of Accounts”

And how the Assets “Begin Total” line looks in the Overview page:

We can see now that the Net Change, Balance, Totaling have been brought into the “Begin Total” row from “End-Total” and the “End Total” row is no longer in the list.

The classic “Chart of Accounts” list page:

The new “Chart of accounts Overview”.


And expanded:

The Overview page does not allow for opening of G/L Account card page.

The Overview page does not allow for editing, inserting or deleting G/L accounts.

But if you want a compact page, with less fields with the option to quickly expand and collapse features for entire groups of accounts, then the new “Chart of Accounts Overview” is a useful alternative.

There is a new Posting Preview Type in Business Central. See how that works!

With BC v19 one of the Application changes affects the Posting Preview functionality.

Read more here.

The new Posting Preview feature can be enabled in the General Ledger Setup:

The way the posting preview worked until now is covered by Posting Preview Type = Standard.

So, if you don’t like the new Posting Preview (Extended) you can always use the previous one.

But let’s recall how the original Posting Preview looks like.

First, Search for General Ledger Setup and set the Posting Preview Type to Standard:

Open a sales order and choose Preview Posting; the image below shows only one group of ledgers, the Related Entries group:

Let’s now head to the General Ledger Setup and set the Posting Preview Type to Extended:

Then re-open the Sales Order and click on Post – > Preview Posting:


  • we can see now 3 groups:
    • G/L Entries -> this is the place where will find the G/L Entries
    • VAT Entries -> records from VAT Entry table
    • Related Entries -> all the rest of the ledgers, including extension or custom entries
  • Show Hierarchical View is a toggle on how G/L entries and VAT entries in the posting preview weather grouped by Account No.(if Hierarchical View is on) or as a list (if Hierarchical View is off).

And if we want to view the details we can use the toggle in the upper right corner of the group to expand or collapse the groups:

Of course, the new Posting Preview on journals looks and feels similar to the documents’ Posting Preview.

Hope this helps!

How checking financial journal in background works

With BC 2020 wave 2 a new feature was introduced that allows for background checks on journal lines.

See more about this new feature here.

“On the General Journal Batch page, you can choose Background Error Check to have Business Central validate financial journals, such as general or payment journals, while you’re working on them. When the validation is enabled, the Journal Check FactBox displays next to the journal lines and will show issues in the current line and the whole batch. Validation happens when you load a financial journal batch, and when you choose another journal line”.

Let’s see how that works.

From the General Journal page, lookup into Gen. Journal Batches:

Enable “Background Error Check”.

In the Default general journal batch we can see now a new factbox : “Journal Check”:

We can observe that while we edit the journal the background check takes place.

If we click on the 3rd cue, “Issues Total”, we can see the errors:

We see that the Amount on the first line is 0.

Let’s update it to “12”:

We can now see that the error “Amount must not be empty” is gone, but we still have the error: “Document No. … is out of balance”.

Let’s update one of the lines so that the sum of all lines is 0.

After we update the Amount on the first line with -11 the errors are gone:

How is this checking in the background working?

With BC 2019 wave 2 release introduces a way for AL developers to start programming using multithreading/asynchronous concepts. 

Developers can now calculate expensive operations in a page without blocking the UI, and then update the UI once the calculation is complete.

Read Microsoft document on background tasks here.

If we were to look at page 1921 “Journal Errors Factbox”, in the OnAfterGetCurrRecord()

The method CheckErrorsInBackground() contains a line that enqueues the codeunit responsible with the general journal lines checking:

The check is done in the codeunit 9081 “Check Gen. Jnl. Line. Backgr.” in the OnRun() method:

Digging deeper, ultimately the standard codeunit 11 “Gen. Jnl.-Check Line” is run for each line.

For each journal line, errors are collected and made available for Counts to the factbox:

For example, for the second cue, “Lines with Issues” the system uses the factbox method GetNumberOfLinesWithErrors();

What about custom validations?

How can we catch those?

In a table extension I added a text field:

Exposed it on the page via a page extension:

At last, in a codeunit, I subscribed to an event from codeunit 11 “Gen. Jnl.-Check Line”

And, if we remove the value of “My test field” in one or more of the lines we can see the TestField error captured by the background task:

For more details, including the implementation of a completely new page background task check Tobias Fenster article.

Leveraging “Filter Tokens” codeunit to expand Business Central users’ filtering experience

Hello Readers!

A few weeks back, I watched Erik Hougaard‘s youtube video “Make your own Date Filters in AL and Business Central” and thought of trying it and adding my own bit to it.

First, what was the intention with custom filter tokens?

The standard application comes already with some tokens.

Think of dates, when you press “t” in a date field you get the today’s date, or when you press “q” in a date filter field you get the current quarter, and so on.

But what if we want to build our own tokens?

Custom Date Filters

For example, let’s assume that if I type “sv1” in a date filter I want the system to process my token into Jan 1st – Jan 31st. If I type “sv2” in a date filter I want the system to translate “sv2” into Feb 1st to Feb 29th or 28th depending on the current year, leap or not, and so on.

How can we do that? Extend the event OnResolveDateFilterToken from System Application codeunit “Filter Tokens” like in my sample code below:

[EventSubscriber(ObjectType::Codeunit, Codeunit::"Filter Tokens", 'OnResolveDateFilterToken', '', false, false)]
    local procedure CustomDateFilter(DateToken: Text; var FromDate: Date; var Handled: Boolean; var ToDate: Date)
        DateToken := UpperCase(DateToken);
        case DateToken of
                    FromDate := GetFromDate(Today(), 1);
                    ToDate := GetToDate(Today(), 1);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 2);
                    ToDate := GetToDate(Today(), 2);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 3);
                    ToDate := GetToDate(Today(), 3);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 4);
                    ToDate := GetToDate(Today(), 4);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 5);
                    ToDate := GetToDate(Today(), 5);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 6);
                    ToDate := GetToDate(Today(), 6);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 7);
                    ToDate := GetToDate(Today(), 7);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 8);
                    ToDate := GetToDate(Today(), 8);
                    Handled := true;

                    FromDate := GetFromDate(Today(), 9);
                    ToDate := GetToDate(Today(), 9);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 10);
                    ToDate := GetToDate(Today(), 10);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 11);
                    ToDate := GetToDate(Today(), 11);
                    Handled := true;
                    FromDate := GetFromDate(Today(), 12);
                    ToDate := GetToDate(Today(), 12);
                    Handled := true;

    local procedure GetFromDate(Dt: Date; mo: integer): Date
        Exit(DMY2Date(1, mo, Date2DMY(Dt, 3)));

    local procedure GetToDate(Dt: Date; mo: integer): Date
        case mo of
            1, 3, 5, 7, 8, 10, 12:
                Exit(DMY2Date(31, mo, Date2DMY(Dt, 3)));
            4, 6, 9, 11:
                Exit(DMY2Date(30, mo, Date2DMY(Dt, 3)));
                    if Date2DMY(Dt, 3) div 4 = 0 then
                        Exit(DMY2Date(29, mo, Date2DMY(Dt, 3)))
                        Exit(DMY2Date(28, mo, Date2DMY(Dt, 3)))

The code could be refactored into a function that parses a 4 characters token of form “svxy” and call once GetToDate and once GetFromDate instead of 12 calls, but that’s not the goal of this blog.

Let’s test it.

Open Chart of Accounts page and use the flow filters in the “Filter Totals By” section of the page as below:

What about text filters? Can we customize them?

Custom Text Filters

This is the use case: each user has access to his list of customers (My Customer page):

Users can edit their own list of customers, adding/removing customers.

We also want, when we are in the Customers list, to be able to quickly filter the list of customers to the list in My Customers.

We can create a custom text filter token and by subscribing to event OnResolveTextFilterToken in codeunit “Filter Tokens” we get the functionality desired, like below:

    [EventSubscriber(ObjectType::Codeunit, Codeunit::"Filter Tokens", 'OnResolveTextFilterToken', '', true, true)]
    local procedure CustomTextFilter(TextToken: Text; var TextFilter: Text; var Handled: Boolean)
        _mc: Record "My Customer";
        _maxloops: integer;
        _maxloops := 10;
        TextToken := UpperCase(TextToken);
        Handled := true;
        case TextToken of
                    _mc.SetRange("User ID", UserId());
                    if _mc.FindSet() then begin
                        _maxloops -= 1;
                        _maxloops -= 1;
                        TextFilter := _mc."Customer No.";
                        if _mc.Next() <> 0 then
                                _maxloops -= 1;
                                TextFilter += '|' + _mc."Customer No.";
                            until (_mc.Next() = 0) or (_maxloops <= 0);

In the Customers List we can now use the new token:

When users filter the “No.” field to “%sv” the system finds all Customer “No.” in My Customer list and populates the filter for “No.” field.

My Customer list consists of customers 20000,30000, and 50000 and therefore when using custom text filter “sv” I get the list of my customers.

You could similarly create a custom token to filter Chart of Accounts to G/L accounts in “My Accounts”.

Things to consider

The token above “sv” would be triggered and parsed in any page.

For example, if we are in the Vendors list the same list (20000,30000 and 50000) will be the result of parsing “sv” token. And that might not be what we need.

A possible solution is to specialize the custom filters to customers or to vendors, like having 2 tokens: “csv” for customers and “vsv” for vendors.

For more considerations when using custom tokens read here.

Go on, try them!

“Field Selection” codeunit – how I select and record the ID of a field in Business Central

Hello readers!

Recently I have been working on a customization for a customer with the goal of changing the out-of-the-box Positive Pay export for a Bank Account record.

While preparing the mapping for the positive pay details, I noticed the way Microsoft wrote the picking up of a field ID. They created a new codeunit: “Field Selection”.

Let’s see how to get to that piece of code:

  • in BC, search for “Data Exchange Definitions”
  • Click on any Exchange Definition Code, then in the Line Definitions, click on Manage and “Field Mapping”
  • In the “Field Mapping”, click on “Field ID” lookup “…”
  • the list of fields in the table 330 is displayed:

This lookup page is triggered by the OnLookup trigger on page 1217 “Data Exch Field Mapping Part”:

field("Field ID"; "Field ID")
                    ApplicationArea = Basic, Suite;
                    ShowMandatory = true;
                    ToolTip = 'Specifies the number of the field in the external file that is mapped to the field in the Target Table ID field, when you are using an intermediate table for data import.';

                    trigger OnLookup(var Text: Text): Boolean
                        "Field": Record "Field";
                        TableFilter: Record "Table Filter";
                        FieldSelection: Codeunit "Field Selection";
                        Field.SetRange(TableNo, "Table ID");
                        if FieldSelection.Open(Field) then begin
                            if Field."No." = "Field ID" then
                            FieldCaptionText := GetFieldCaption;

                    trigger OnValidate()
                        FieldCaptionText := GetFieldCaption;

The OnLookup trigger is using codeunit 9806 “Field Selection”. This codeunit, as well as its associated page, Page 9806 “Fields Lookup” can be located in Microsoft System Application app.

You can go through the source code for this codeunit here.

As you can see below, the main function Open is fairly simple:

Let’s put these objects into a simple practice exercise.

I am going to create a new table and in it a new field in which I am planning to record the ID of the Customer.”No.” field.

Here is field definition in the table:

        field(2; "Customer No Field ID"; Integer)
            DataClassification = CustomerContent;

And here is the field definition on the list page:

                field(MyField2; Rec."Customer No Field ID")
                    ApplicationArea = All;

                    trigger OnLookup(var Text: Text): Boolean
                        RecField: Record "Field";
                        FieldSelection: Codeunit "Field Selection";
                        RecField.SetRange(TableNo, Database::Customer);
                        if RecField.Get(Database::Customer, Rec."Customer No Field ID") then;

                        if FieldSelection.Open(RecField) then
                            Rec.Validate("Customer No Field ID", RecField."No.");

First, we’re filtering the Field record (RecField) to the Customer table and then we execute the “Field – Selection” Open method, which in turn displays the “Fields Lookup” page. Lastly, I validate my new field “Customer No Field ID” against the result of the lookup:

In the Lookup page users can pick the field and the field ID needed:

The goal with this exercise reminding those who knew and making aware those who didn’t know about the new Microsoft System app objects and use them in daily tasks, instead of re-inventing them each time.

Moreover, these objects are part of the platform (designed and tested by Microsoft), therefore, we have every reason to use them.

Hope this helps!

Handy Date-Time Dialog in Business Central

Did you ever need a DateTime field in your Business Central extension?

I recently added, in one of my customer extensions, a DateTime field, and wanted to allow users to not only record a date, but also a time.

The solution is not difficult, even if we need to write our own code.

But why not use existing code in Base Application?

Look at this sample code:

table 50110 "Sample DateTime"
    DataClassification = CustomerContent;

        field(1; MyDateTime; DateTime)
            DataClassification = CustomerContent;

            trigger OnLookup()
                DateTimeDialog: Page "Date-Time Dialog";
                DateTimeDialog.SetDateTime(RoundDateTime(MyDateTime, 1000));
                if DateTimeDialog.RunModal() = Action::OK then
                    MyDateTime := DateTimeDialog.GetDateTime();

When you run the page click on the “…” and see the Date-Time Dialog page:

The code above is using Page 684 “Date-Time Dialog”.

If you want to see how Microsoft designed the page, check this.

And if you want to see how Microsoft implemented it in Base Application check table 472 “Job Queue Entry”, fields “Expiration Date/Time” and “Earliest Start Date/Time”.

Look for all pickable DateTime fields in your solutions and re-factor them using “Date-Time Dialog” page.

Hope this helps!

So I chose Business Central … But am I losing my Dynamics GP data?

In the last 6 months I’ve been involved with a number of GP to BC migration projects.

A recurring question that reaches our team is how do I see GP data in BC?

One avenue to move your business to BC is to import open transactions and master data, and tested setup tables with RapidStart packages. If the underlying table of the desired GP entity does not exist in BC, then a Business Central developer would need to create the table in BC and, with Edit In Excel functionality you can get GP data in BC.

There is also the Cloud Migration Tool in BC. More about it here.

Using this tool ensures the most important entities, master data and open transactions, will make it into BC. But what if a GP end-user wants additional GP data in BC?

Microsoft recommendation is to bring as little as possible into the cloud from an on-premise database.

Moreover, as your database capacity increases, your cost can increase. See more here.

Rather than bringing GP tables one by one in BC, use the cloud migration tool to move data from GP to Azure Data Lake.

If the decision is, though, to have some GP data in Business Central, there are tools to make that possible.

We can extend the cloud migration tool so that, when the migration starts, beside the core migrated data (master data and open transactions) the process will also bring into a new space (an extension table) the data from the GP table as mapped in the “Manage Custom Tables” page.

What’s needed to achieve this:

  • Create a Business Central extension. In it, create an AL table to store your data from a GP table
  • Add the custom table in Manage Custom Tables
  • Run migration tool
  • Check custom table content after migration

Let’s try bringing table GL00100 from GP in BC.

Note: this table was chosen only for demonstration. GL00100 is brought by default by the cloud migration tool into BC table “G/L Account”.

Create extension with GP table

I created an extension that includes a table for this GP entity:

Map migration for new table in “Cloud Migration Management”

In Business Central, search for “Cloud Migration Management”.

Under actions trigger “Manage Custom Tables” action:

Under “Migration Table Mapping” page, map new table in your extension to the GP table:

On “Migration Cloud Management” trigger the “Run Migration Now” action.

You can check the results in the cue on the Migration Information area:

To check the content migrated:

  • change the company to the migrated company
  • run the new table by adding “&Table= 50340” to the Business Central URL:

We can now see the result of migrating the GP data to the custom BC table:


To answer the question in the title, you don’t lose GP data. There are multiple ways of accessing your GP data post go-live to BC, involving:

  • retaining the access to your old system
  • migrate your Dynamics GP installation to Azure (SQL Server and application)
  • migrating your GP data warehouse to Azure Data Lake
  • or, as shown above, with minimal coding, keeping your GP data in Business Central

Engage with your partner and decide what GP data do you really need today so that long term your cloud ERP stays performant.

Export Business Central online entities to Azure storage blob container

As most probably know, it is not possible to access the file system while in Business Central cloud environment.

For example, in Dynamics NAV, we could have a job queue entry that, when run, creates a file and copies it in a network folder. We can still do that in an On-Premise environment, but not with cloud BC.

You could create the file and use DownloadFromStream, but that would only prompt you do download it locally, but would not copy it somewhere on a local or network folder.

If you try to use File.Create() you would get the warning: “The type or method ‘Create’ cannot be used for ‘Extension’ development”.

If your customer is happy to grab the file manually every time from the downloads folder then this should suffice:

But, if we want to automatize this process and run the extract on a regular basis, we need to find a cloud solution for storing the files.

Currently, there are 4 types of storage in Azure platform:

  • Containers/Blobs
  • File Shares
  • Queues
  • Tables

In my previous blog I dived into the Azure Storage of type Tables and tackled its API.

This blog is about interacting with the Azure storage blob containers:

  • manually, via Azure Portal
  • simulation, via VS Code extension “Rest Client”
  • Business Central extension
  • view blob container with Excel
  • get Azure Blobs locally

I found on Michael Megel’s blog a nice solution for exactly what I need. Awesome job on Blob Containers API, Michael! Thank you for sharing!

What I need:

  • Azure:
    • Set up a blob container to store Business Central exported files
    • Set up Storage Access Key
  • Simulation:
    • In VS Code, write requests with “Rest Client” extension, targeting Azure blob container API
  • Business Central:
    • A setup table in Business Central for Azure access stuff
    • Wrote an export interface that would allow users to run an action(“Write File in Azure”) that will send the extract to Azure container. The same code could be executed by a job queue.

Blob Container Setup

To set up a container, following Michael’s notes on above blog was enough for me.

For blob container accessibility I went on the path of shared access signature “SAS Token”.

Once created, you can start playing with the storage account container API.

I created the storage manually:

Drilling down into the storage account, I created a new container:


In VS Code, using Rest Client,

  1. I sent a request to get the list of containers:


GET https://svflorida.blob.core.windows.net/?comp=list&%5Bhere you insert your SAS token key]

content-type: application/json


HTTP/1.1 201 Created

Content-Length: 0

Content-MD5: 1B2M2Y8AsgTpgAmY7PhCfg==

Last-Modified: Wed, 18 Aug 2021 19:05:13 GMT

ETag: “0x8D9627B1BD88A0F”

Server: Windows-Azure-Blob/1.0 Microsoft-HTTPAPI/2.0

x-ms-request-id: 3f97555d-801e-006d-5263-94f646000000

x-ms-version: 2020-08-04

x-ms-content-crc64: AAAAAAAAAAA=

x-ms-request-server-encrypted: true

Date: Wed, 18 Aug 2021 19:05:13 GMT

Connection: close

2. I sent a PUT request to insert an empty file:


PUT https://svflorida.blob.core.windows.net/vendorlist/vl1111?%5Byour SAS token here]

x-ms-blob-type: BlockBlob

Content-Length: 0


HTTP/1.1 201 Created

Content-Length: 0

Content-MD5: 1B2M2Y8AsgTpgAmY7PhCfg==

Last-Modified: Wed, 18 Aug 2021 19:23:46 GMT

ETag: “0x8D9627DB340E9DD”

Server: Windows-Azure-Blob/1.0 Microsoft-HTTPAPI/2.0

x-ms-request-id: b77cbfb2-b01e-003b-2566-9407a9000000

x-ms-version: 2020-08-04

x-ms-content-crc64: AAAAAAAAAAA=

x-ms-request-server-encrypted: true Date: Wed, 18 Aug 2021 19:23:46 GMT

Connection: close

And this is the file in Azure portal:

Business Central extension:

This is how the new setup table “Azure Storage Setup” looks in BC:

This is how the new BC interface “Vendors Export Log” looks like:

“Write File In Azure” action on page 50251 “Vendor Export Log” does the following:

  • exports all BC vendors to a blob
  • the blob is then written to a PUT request content
  • the PUT request is sent to Azure Blob Storage API

Consult Blobs with Excel:

BC users can click on the URL link above and download locally the file or they, and other 3rd party users, can access the files via Excel, as I explained in my previous blog.

This time though, when creating the connection choose Data – > Get Data -> From Azure -> From Azure Blob Storage.

And finally displayed in the Excel book:

Get Azure Blobs locally

To help with getting the files locally, I wrote 2 blogs:

  • one about getting the files locally using Power Automate
  • one about Azure CLI to copy the files from azure blob storage locally

For more about storage accounts in Azure check this out.

You can find sample code repository here.

Copy files from Azure Blob Storage to File System (using Power Automate)

I found an older post on community.dynamics.com in which someone was asking for ways to automatically drop data extracts originated in BC SaaS into a local folder.

First, in SaaS, we can’t generate the files automatically and store them locally.

We need to store them in the cloud.

Once in the cloud, how can we automatically download them locally on a machine or a network folder?

I bing-ed the phrase “copy files from azure blob storage to file system” and the first search result was this link to a Power Automate template flow:

There are a multitude of cloud providers, but Microsoft does continuously a great job at connecting everything between BC SaaS, Azure platform, Power Automate and Power Apps, so it’s just convenient to use its tools.

To test it, I went through the following exercise:

  • In Azure Platform I created a storage account and in it I created a Blob Container.
    • “A container organizes a set of blobs, similar to a directory in a file system. A storage account can include an unlimited number of containers, and a container can store an unlimited number of blobs.”
  • I created a local folder that will be synchronized by the new flow with the container in Azure

In Power Automate, I started with the Template provided by Microsoft and set up the flow:

The flow requires two connectors to be set up:

  • one to the azure storage container
  • one to the local or network folder

Editing Azure Blob Storage we see that we need the name of the azure storage, in my case “svflorida” and storage access key:

Storage access key is located in in azure portal under Access Keys:

Editing the File System Connector:

The most time consuming, about half an hour, was to set up and troubleshooting the gateway.

The flow cannot just drop files from Azure on your machine. It needs a gateway.

To create a new gateway, click on the drop down and choose “+ New on-premises data gateway”.

That will prompt you to download an msi to install a gateway: GatewayInstall.msi.

Once gateway installed, the only change I’ve operated was to switch from HTTPS to TCP:

In a live environment I would investigate and maybe set up an Azure Service Bus, but for the purpose of this exercise I went with TCP.

Once that is done the flow will be triggered when new files are uploaded or deleted from the Azure Container.

I noticed that with my free trial license the recurrence of the flow was set to 3 minutes.

The flow seems to pick changes as expected, just be patient and wait for the next run 🙂

In azure portal, upload a new file into your container:

The file will appear after a few minutes in your local folder:

And the flow shows a successful run:

That’s it! In the next blog I will look into how I can generate BC SaaS extracts into an Azure storage container so the flow doesn’t feel useless 🙂

I hope this helps someone. In any way, it’s late here so I call it a night!