D365 Business Central

Business Central Attachments with standard API – Part 1 Basic Explanation

A nice feature which is explained fairly well in the Microsoft docs site but it is especially nice to have a working example. (https://docs.microsoft.com/en-us/dynamics-nav/api-reference/v1.0/api/dynamics_attachment_patch). The attachments API itself actually points to the “Incoming Documents” feature of BC, so terminology might catch you out. The scope of the API therefore covers whatever you can use “Incoming Document” for: Purchase Invoice/Credit, Sales Invoice/Credit and Journal lines.

You need to use to HTTP calls to make this one work and this is the pattern:

Firstly you POST a simple line to say what you are attaching to i.e. our Invoice/Credit record or our journal line. This must be the ID or SystemID value of that record. How this plays out in a practical sense will depend on how you implement the API with your solution. In the scenario where you create a purchase invoice and then have an attachment of that latched against it you will need to perform the creation of the purchase invoice record first – a follow up post on this. Here is how the first action looks:



{    “parentId”: “5a086bc7-195f-eb11-89f9-0022481ab2d5”,    “fileName”: “Example.pdf”}

How it looks in a HTTP client like Postman. Note that the “filename” property is just a value you choose. So if this was part of a solution you might do it as the invoice number or document no. of the journal line you created before this step

Now the PATCH part is where the order of this becomes very important. You need a value from the POST to do the PATCH…..😮

This is the response I get from doing the POST command. It is the ID value which is new to the story and is how I perform the actual attachment process. POST is just to create the Incoming Document record….penny drops 🙈

Once the above is known then the PATCH command shown in Microsoft Docs becomes very easy to follow. Here is the command: PATCH businesscentralPrefix/companies({companyId})/attachments(parentId={parentId},id={attachmentId})/content . Simply add the information we now know. So in my case, with the above screenshot, my “parentID” is 5a086bc7-195f-eb11-89f9-0022481ab2d5 and my “id” is 7a1f7c6c-1e5f-eb11-89f9-0022481ab2d5. Notice that the odata.etag has been provided from the previous POST step so you can add that in as well for the “Headers” of the PATCH command. Here is what I mean:

etag is there to track the changes – make sure someone else hasn’t modified the record since you last got it. It is possible to use a wildcard here if needs must

In postman at least the body of the PATCH command is something like below but in a real solution you just need to make sure you pass a binary file:

In postman if you are testing this you can select a file to work with and it will pop open your file explorer.

Once each of the mentioned are in place you can go ahead with the PATCH. You should get a 204 status response but there will be no body type output.

When you head over to BC though you will see your record, which started life as our ID no has an “Incoming Document” record against it.
Here is the record in the Incoming Documents table. Once posted a user will be able to view document as well.
D365 Business Central, PowerApps

Business Central Images to a Canvas Power App Gallery

For those who missed it I did a session for BC Tech Talk last year:

During that session I showed how to get a single image for an item record with an API call (35mins and beyond). The method was very simple to create a custom connector for the standard Picture API and just add a extra bit of text. Similar to this: https://api.businesscentral.dynamics.com/v1.0/8d0632b1-47bf-41fe-ba13-a838adf98c48/sandbox/api/v1.0/companies({companyID})/items({itemID})/picture({pictureID})/content

The green text pulls the image directly into an image control in the canvas app 👍. I mention in the video that you could have the picture images in the main gallery view – it will be slower this way but I was asked to at least explain how. The standard API isn’t that helpful here – VERY HAPPY TO BE TOLD HOW TO USE IT CORRECTLY – the endpoint doesn’t interact in the same was as a HTTP request would and it wants to produce a table of data and no matter how I work with the connector with the available formulas I just get errors. Can see from the Power Users forum this is a similar theme with others:

So to get around this a new page is needed with some extra capability. The end goal here is to create a custom connector for use in powerapps that gives the base64 image value for BC item records. I took inspiration for the solution from this blog which I’ve adapted slightly for latest version (at the time of writing being 17.2 – may have changed since): How to get picture from MediaSet through standard APIs. – Dynamics 365 Business Central Community

Final code is on github – Code: https://github.com/JAng13sea/Blogs/tree/master/ItemImages – but in essence you need a new API page for the item table. A field on the API page which is populated by a codeunit return value of text which has been converted into base64:

    procedure "Pic as JSON"(ItemNo: Code[20]) : Text;
        Item: Record Item;
        TenantMedia: Record "Tenant Media";
        PicText: Text;
        PicInstr: InStream;
        JObject: JsonObject;
        JToken: JsonToken;
        TempBlob: Codeunit "Temp Blob";
        PicOStr: OutStream;
        Base64: Codeunit "Base64 Convert";
        If Item.Picture.Count = 0 then
        if TenantMedia.Content.HasValue then begin
            PicText := Base64.ToBase64(PicInstr);

Note that it has been added into a JSON structure to make it easy for other solutions to read it. From here you will need to create a custom connector for Power Platform. I did another video on this so check it out if you need guidance on that part:

Once the connector is in place and you have pulled the data from BC into a collection in PowerApps you can address the image value in the gallery. When using a gallery in PowerApps a predefined method exists for stating each row of the gallery – ThisItem – the value passed from BC is in Base64 but it needs decoding in PowerApps for an image control to display it. In the image control add the text “data:image; application/octet-stream; base64,” & ThisItem.picture

Depending on the volume of items with images this type of call could be very long so tread with caution. If you happen to be using images with other data or storing other blobs this pattern is a way to get the data into PowerApps.

D365 Business Central

Business Central 2020 Wave 2 Enhanced Email Capabilities – How to setup

If you read over the latest changes shipped with version 17.1 you would have seen the enhanced email capabilities mentioned. This can be enabled early by checking out the feature management page:

Just doing this though doesn’t mean you can start to enjoy the new features straight away, there is some setup to handle. A lot of the required setup is described very well on the docs.microsoft.com site: https://docs.microsoft.com/en-us/dynamics365/business-central/admin-how-setup-email

However, that doesn’t always have all the steps in enough detail. The end goal of this functionality is to have dedicated email accounts for specific scenarios that need emailing from the system. Here is a configured list to illustrate where we want to end up:

All of the documents shown will now have the “From” address of accounts. This means a contact is more likely to reply directly to this group email rather than a direct contact 👍

Before getting started in Business Central go to the Office 365 admin centre and add shared email accounts for each of the scenarios that can be covered. Out of the box this includes documents based on sales, purchase, service and internal messages like approvals notifications (can be extended to cover more – save that for another time). These type of mailboxes therefore make sense:

The majority of the connection setup is done through a wizard where you either pick the current user account so you can send emails as your logged in BC user or choose one of the above shared mailboxes. The current user method is very simple so I will cover the shared mailbox

Search for “Set up Email” and cycle through the wizard page to the one shown (page 2), choose the shared mailboxes option. Note that if you’re not a user with the SUPER permission assigned you will need a new permission set called EMAIL SETUP which is available in the main list.
Add the details of one of the shared mailboxes from the Office 365 admin centre. Finish the wizard and test the connection. Repeat this step for the other accounts that you need.
Once you have added all the accounts if you search for “Email Accounts” you can see all of the available ones to work with. Note that the legacy SMTP connection will be created for you already and it will be the “default”. There is an action to reassign the default available from this page as well as testing the accounts or composing a none document related email with that account.
The next area of interest in this page is under the “Navigate” tab where you can see email activity with that account from BC and which “Email Scenarios” are assigned to the email account.
Simply choose the documents you want to be sent from that email account
From that point onwards your chosen account will be used for that document. Any previous email dialog screens have been replaced with this one. If you have email layouts setup they will work too.
On the role centre you will notice a new activity cue. The draft cues means that users are asked to save as a draft or to discard the email – much like a regular email experience.

I’ve configured this in two separate tenants thus far (as of 09/12/20) and the experience has been fairly slick. The only issue I experienced was to do with an Exchange configuration where no Office 365 connector was in place. If you are repeatedly given a message in BC about not being able to access the “Set up Email” page jump over to the Exchange admin centre and see the “Connectors” which currently lives under the “Mail Flow” area:

Users are able to search for “Compose an Email” to access the email editor with no document scenario assignment:

Would have been nice if the “Attach File” option let you search documents stored in BC but that is currently not the case. Right now that will let you choose a file from a locally accessible location.

A much richer experience overall. Look forward to seeing what others do to enhance this.

D365 Business Central, Power Automate

Business Central Batch post and e-mail with Power Automate – no code

Batch posting has been in the product for some time but I am not seeing a clear way, happy to be wrong, on batch post and e-mail. Here are my options (below) as a user conducting the posting. Yes, I have post via the job queue as well but from what I’ve tested this isn’t sending my e-mail for me. Even the print option breeds no results here. Thought it would at least use the “Document Sending Profile” on the customer record.

Even when you use the “Post Batch” you get nothing about e-mailing? 😬 Not forgetting the workflows in BC have no option for “Post & Send” it’s just “Post”. Usually these gaps would need filling with a code modification but not in this blog.

Where there is a will there is a way and my idea here is to use Power Automate to do the heavy lifting. On this occasion I will use a manual trigger but if this was a production ready scenario I would use a scheduled type flow.

The connector for BC in Power Automate is fairly small but I’m sure it will get better over time. There is a slight restriction though as the action of posting and emailing exists but it’s on a singular level like it is in the regular UI. So the first thing I need to do is fire in some data I can use in Power Automate from BC. I will of course need the GUID ID reference to the sales invoice as that’s what the BC Power Automate connector likes. The page that fits the bill here is available as a web service already. I will use the top one in the list 2811. This page is a mixture of open and posted sales invoices so some filtering is needed:

Example of the payload from this page:

Adding a filter to the ODATA query so I only post invoices that are ready to be posted. In the case of this page the “status” values are different to regular BC. In my case I have a choice between draft aka “Open” or open aka “Released”. So I have added ?$filter=status%20eq%20%27Draft%27%20and%20totalAmountIncludingTax%20gt%200 to the end of the web service URL I got from BC. Reason being the feature in the Power Automate BC connector restricts me to draft only and I don’t want to post invoices with a 0 value. Will log something on the Power Automate forum about the connector wanting “Open” invoices rather than “Released”. Backwards logic otherwise, what if I’m using approvals for instance. I think this is possibly wrong so I have posted this to find out more: https://powerusers.microsoft.com/t5/Connecting-To-Data/Is-the-Business-Central-Post-amp-Send-Invoice-action-correct/m-p/637081#M9492


Our flow starts to take shape like this. Check out my last blog for a more detailed account on the parse JSON part (https://joshanglesea.wordpress.com/2020/07/22/power-automate-purchase-order-alerts-to-vendor/)

Once we add the “id” from the parse JSON step you will get an “Apply to each” wrap around the chosen BC action which is exactly what we want (automatically). Remember our goal Batch post and e-mail invoices – so we better placed than standard.

In my case a small batch of invoices have been handled and emails dished out accordingly. I added an extra step for updating the posting date as well. Just so it takes something useful from the existing “Batch Posting” feature 👍

D365 Business Central

Business Central Demand Forecast – needs something extra!

Have you ever looked at the demand forecast in D365 BC and thought that is missing features which actually make it usable! I mean look at it…but actually look at it:

Yes I can toggle the matrix view to alter the dates and change to component items instead of sales but if I want to forecast surely I need to do it for items that actually need manufacturing first! After all that is the premise with it. You populate it and then it gets used as part of MRP and MPS. How can we change this situation so the page is actually friendly and a user can apply sensible filters? Initial thoughts would be just personalise it, oh wait you don’t get any fields to choose…

Well the answer lies in the make up of the page object. Which as it turns out is the Item table:

So our goal here is Add sensible fields to the page that can be used for better filtering when devising a demand forecast. This might seem overly simple as an idea but the value comes from the fact the item table, especially for a manufacturer, can become very large indeed. You will have items that get blocked, you will get items that have been replaced by others or are now defective. The list in it’s current state over time will become too difficult to work with.

The method to achieve this goal is simple. Create a page extension to page 9245 and throw in the necessary fields the user is most likely to plan with.

Other fields can be added of course but straight away a user has something way more friendly:

For more information on demand forecasting check this out: https://docs.microsoft.com/en-gb/dynamics365/business-central/production-how-to-create-a-forecast

Code available here: https://github.com/JAng13sea/Blogs/tree/master/Demand%20Forecast

D365 Business Central

Business Central Gen. Jrnl. Imports with Data Exchange Definitions

Have you seen this button on the general journal page and thought that’s useful?

Some of you might not have seen it though as the button only appears if you complete some setup in the General Ledger Setup page:

The above field shows a list of Data Exchange Definitions for the type of “Payroll Import”. So it is fit for purpose but only usable for payroll – and more importantly just one import file structure. For demos I have often mocked up a Data Exchange Definition as a payroll import type and just passed over a CSV file. This falls into my one of many ways a journal can have external data added to it. This is fine for one off demos sessions but how can this idea be taken seriously in a project/production scenario? The answer lies in how is the current “Payroll Import” button working and can we change it for our situation? My end goal here would be to have the user pick from a range of different data exchange definitions which work for different CSV files. In the past customers may of had bespoke import routines passing data through the excel buffer. If they can compromise on having the file converted to CSV this could be a worthwhile solution!

Over in the base app the “Payroll Import” action button looks like this:

So it is only ever looking at that setup page to know which data exchange definition to use. It also has it’s own codeunit to run the process. So the component parts are small and we can adjust them with ease for our end goal.

Very simply a page extension is needed for the general journal and you can go with something like below to add the type of page action we want. In my case I have opted to use the “Generic Import” type on the data exchange definition – which I have set as a global variable on the page.

Codeunit wise I have done a complete copy of the base app and then renamed the function names. Very easy indeed. The process itself works fine so no need to change anything it is more about what you offer the user when they make that button selection.

The end result is a dynamic journal import selection. The user can now maintain and update a data exchange definition or add new one’s as new journal import requirements come along! 👍😁

Don’t know much about data exchange definitions? Check this out: https://docs.microsoft.com/en-gb/dynamics365/business-central/across-how-to-set-up-data-exchange-definitions

Code available here: https://github.com/JAng13sea/DED-Jrnl-Import