Microsoft Dynamics GP–United Kingdom, Making Tax Digital (VAT) for business MTD / MTSfb

Making Tax Digital is a Her Majesty's Revenue and Customs (HMRC) introducing a mandatory electronic filing of VAT (tax) returns by business by using an application that supports their application programming interface (API). VAT records must be maintained and submitted digitally after April 2019. HMRC are encouraging software developers to engage with them to create applications to interoperate with their APIs HMRC Blog - Digital Relationship Management – A new era in 3rd party software collaboration. Xero and other software companies have been working on the private Beta of the APIs for some time, but what about Microsoft?

HRMC - Overview of Making Tax Digital

HMRC Overview of Making Tax Digital


Dynamics GP, SMB products and Making Tax Digital VAT submission MTD

Microsoft Dynamics products AX, NAV, 365 Finance & Operations will all enable customers to be compliant,  the details of how is yet to become clear, perhaps bridging software?

Microsoft Dynamics community- Are you using our accounting software Dynamics NAV or Dynamics 365 Business Central and worried about compliance with Making Tax Digital?

Did you know the Microsoft SMB ERP products also include Dynamics GP too? -Dynamics GP already allows VAT to be recorded electronically and even has the VAT daybook functionally. You would think it not too great a leap to create a little helper application that could pluck the records from the database and submit them via the HMRC web API. It is disappointing that in April 2018 all we have from Microsoft is this page for users of GP.

VAT 2019 digital regulations for Microsoft Dynamics GP

that points to the suggestion list for new features for GP…

Suggestion: GP needs VAT electronic filing to be compliant with Making Tax Digital initiative

So one may think from this that there are no plans in action at the moment for it to be supported, on the other hand you could take the view this is Microsoft acknowledging the requirement, perhaps Terry may well have had her ear bent by the UK Dynamics partners thus creating this page? Admittedly it is a year away and the MS developers can work quite quickly when they need to. Also to be fair this product suggestion site is the funnel through which new features/requirements should be captured, so perhaps it is in hand?

However it would be nice to know soon if UK customers need to find another 3rd party bridging software to the HMRC APIs soon so we can start answering our Finance Directors and Controllers questions about what the plan is for 2019 (and yes that question sparked this blog post).



What is amusing is that HMRC have announced that spreadsheets are acceptable when used with bridging software to the APIs – heaven knows what accountants would do without them!

“Businesses will be able to continue to use spreadsheets for record keeping, but they must ensure that their spreadsheet meets the necessary requirements of Making Tax Digital for Businesses. This is likely to involve combining the spreadsheet with software.”

Accounting web- Spreadsheets for Making Tax Digital – The universal language of accounting


I will update this post if there are further developments over the year.

Setting multi-line text box control in a Microsoft Dynamics GP add-in to be empty or blank

When working with multi-line text boxes (Text Tool), rather than single line edit boxes, it is easy to introduce a bug to your application.

Blank edit box in Dynamics GP Addin

The text box contents can be set with the the example code below:

ItemMaint.LocalTxtExtraInfo.Value = result.ExtraInfoDescription

…where the value of the right hand side is written to the control’s value and is thus displayed.

As the record set is scrolled, by for example, the user using the form’s scroll buttons, then this code may be called repeatedly to show this field’s value for each record in turn.

The problem I experienced, occurs when after displaying a value for the first record in the field, a subsequent record happens to be empty. In this case  the empty string is assigned to the control’s value, but the control does not blank itself in the user interface. In fact in debug, looking at the control’s value immediately after setting it to string.empty, it is found that the value has not changed from the previous record. 

So we have found that the field is not updated if an empty string is assigned to it. This seems to be a design decision in the  way the objects have been designed to behave. Hence the field will retain the previous record’s value until the next non-blank value in encountered in the record set.

This not only misleads the user as the incorrect field data is displayed for what should be an empty field, but it also, if the record is “saveable” of writing that wrong value back to the database, thus corrupting the field’s value “permanently” in the database (this is what brought my attention to the issue).

So if this control is used in your addin- always remember to use the following pattern, or equivalent to check for empty values. This uses the fields clear method to correctly empty the field on empty strings.

If result.ExtraInfoDescription.Length = 0 Then
ItemMaint.LocalTxtExtraInfo.Value = result.ExtraInfoDescription
End If

This behaviour is not followed by the normal edit boxes, they will blank when string.empty is assigned to them.


If you found this helpful, feel free to comment, it helps motivate me to write more!

WCF Registered base address schemes are []

Moved WCF service from old server to 2012 server to find the WCF service would not run. It complained that

"Could not find a base address that matches scheme http for the endpoint with binding WebHttpBinding. Registered base address schemes are []"

Stack overflow post below was the lead as to how to resolve it:

WCF Registered base address schemes are [] error with https

With a fake IP address for purposes of this post, the WCF config section had the follow lines, removing the <add prefix… line from the .config brought the service to life.

<add prefix=""/>
So what is the baseAddressPrefix? –it is for dealing with where there are multiple IIS bindings for a site providing a listening filter for the service.

To quote MS documents:

“A prefix filter provides a way for shared hosting providers to specify which URIs are to be used by the service. It enables shared hosts to host multiple applications with different base addresses for the same scheme on the same site.+

IIS Web sites are containers for virtual applications which contain virtual directories. The application in a site can be accessed through one or more IIS bindings. IIS bindings provide two pieces of information: binding protocol and binding information. Binding protocol (for example, HTTP) defines the scheme over which communication occurs, and binding information (for example, IP Address, Port, Hostheader) contains data used to access the site.

IIS supports specifying multiple IIS bindings for each site, which results in multiple base addresses for each scheme. Because a WCF service hosted under a site allows binding to only one base address for each scheme, you can use the prefix filter feature to pick the required base address of the hosted service. The incoming base addresses, supplied by IIS, are filtered based on the optional prefix list filter.”

Dynamics GP basic pricing export to Excel with crosstab SQL

The following SQL table function allows exporting of GP prices into Excel.
Assumes max of 6 price breaks, but can be expanded.
SELECT * FROM [Extract_PricesCrosstabTable_Fast] ('GBP','TRADE','%') ORDER BY ITEMNMBR
-- =============================================
-- Author: Tim Wappat
-- Create date: 2010-08-02
-- Description: Function to crosstab price breaks for price level

-- Faster set based non-cursor version of crosstab for pricing
-- =============================================

CREATE FUNCTION [Extract_PricesCrosstabTable_Fast] (

RETURNS @ReturnTable TABLE (
,[BREAK1] [varchar](255) NOT NULL
,[PRICE1] [numeric](19, 5) NULL
,[BREAK2] [varchar](255) NOT NULL
,[PRICE2] [numeric](19, 5) NULL
,[BREAK3] [varchar](255) NOT NULL
,[PRICE3] [numeric](19, 5) NULL
,[BREAK4] [varchar](255) NOT NULL
,[PRICE4] [numeric](19, 5) NULL
,[BREAK5] [varchar](255) NOT NULL
,[PRICE5] [numeric](19, 5) NULL
,[BREAK6] [varchar](255) NOT NULL
,[PRICE6] [numeric](19, 5) NULL

WITH PriceTableCte (
AS (
) AS 'PriceBreak'
FROM IV00108

INSERT @ReturnTable
WHEN PriceTableCte.[PriceBreak] = 1 THEN LTRIM(CONCAT(STR(FROMQTY, 6, 0), '+'))
END), '') AS PriceBreak1
WHEN PriceTableCte.[PriceBreak] = 1 THEN UOMPRICE
END) AS Price1
WHEN PriceTableCte.[PriceBreak] = 2 THEN LTRIM(CONCAT(STR(FROMQTY, 6, 0), '+'))
END), '') AS PriceBreak2
WHEN PriceTableCte.[PriceBreak] = 2
END) AS Price2
WHEN PriceTableCte.[PriceBreak] = 3 THEN LTRIM(CONCAT(STR(FROMQTY, 6, 0), '+'))
END), '') AS PriceBreak3
WHEN PriceTableCte.[PriceBreak] = 3
END) AS Price3
WHEN PriceTableCte.[PriceBreak] = 4 THEN LTRIM(CONCAT(STR(FROMQTY, 6, 0), '+'))
END), '') AS PriceBreak4
WHEN PriceTableCte.[PriceBreak] = 4
END) AS Price4
WHEN PriceTableCte.[PriceBreak] = 5 THEN LTRIM(CONCAT(STR(FROMQTY, 6, 0), '+'))
END), '') AS PriceBreak5
WHEN PriceTableCte.[PriceBreak] = 5
END) AS Price5
WHEN PriceTableCte.[PriceBreak] = 6 THEN LTRIM(CONCAT(STR(FROMQTY, 6, 0), '+'))
END), '') AS PriceBreak6
WHEN PriceTableCte.[PriceBreak] = 6
END) AS Price6
FROM PriceTableCte