D365, Flow and Twilio

In this post I will walk through the steps to use Microsoft Flow and Twilio to provide two factor authentication for registering with a Microsoft D365 portal. For the purpose of this post I am not actually going to go through the portal registration process as there are plenty of posts out there on how to configure the D365 portal for registration. Instead, I will simulate the process by creating my own Contact record and using Flow to deal with the messaging.

The first task is to sign up for a Twilio account. The great thing is they provide free trial to check the services are going to meet your needs. For our needs we are creating a Verify project.



The next step is to verify a phone number against your own Twilio account. This option also allows you to set 2FA on your own Twilio account.


We then add a Friendly Name for the application.


Add a phone number to make your first request


Pressing the Make Request button will send the message to the designated mobile number with the Friendly Name of your project in the content of the SMS message. Make sure you select the correct Country Code!


To verify the code supplied in the SMS message you can complete the process by supplying the verification code.


If you supplied the correct verification code then you will get the following response.


Having completed the setup for the Verify project we can now turn our attention to the Microsoft Flow configuration. The process will need to send the verification code when a new Contact record is created that contains a value in the Mobile field.

The first step is to create a trigger that is going to start the operation. For this we need a Dynamics 365 trigger called When a record is created.


Make sure you give your trigger an appropriate name before you add any other actions because this can’t be changed once actions are attached to the trigger.


Enter the name of the D365 Organization and the select the relevant entity for the trigger, in our case its the Contacts entity. After that we add our first Action which is a Condition to check that the Mobile Phone field has a value. If it doesn’t the workflow will just finish.


If a Mobile Phone number is supplied in the new Contact record then we can create the request to our Twilio application. This is done by creating an HTTP Action that uses the POST method to send the request.


Twilio has some good documentation on the API requests that can be made for the Verify API, including simple examples. – Verify Phone Verification API. Using this API we need to provide a couple of header values. The first is normal Content-type (application/json) and the important one is the X-Authy-API-Key which is available in the General Settings of your Verify Project.


The POST body names to contain the key-value pairs for parameters listed in the API documentation. For the phone_number we select the dynamic value from the Contact Mobile Phone field. To test our Flow we can use the Test option and create a quick Contact record in D365.



Once you click the Test button then you need to create your Contact record and fill out the Mobile Phone field. The mobile phone number can be entered without spaces, with spaces or with hyphens.


You should then get a response on your Flow to say that everything ran successfully, plus you should get you SMS on the mobile phone you entered in the Contact record with a verification code.


You can also review the Flow history within the Flow dashboard, under My Flows, to see which requests were successful. Opening the specific run will provide details of when the trigger was fired, which Actions were completed and details about the POST request and response.


In my next post I will provide a walk through of how to verify the code that was supplied in the SMS message.

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