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The walk-throughs on this page will help you create your first integrations.
Use the information provided to understand how the configurations work. Then, try it with your own integrations.
The content below assumes a basic familiarity with interfaces and focuses more on the specifics of configuring an integration to an external service. Consider going through the Interface Tutorial before proceeding.
The content below also assumes that you have a basic familiarity with using APIs. Note that you will need to register for a free, third-party API to complete this tutorial.
In this tutorial you'll create two integrations to the Authorize.Net Payment Gateway using their REST API:
Tip: The Appian Tutorial application is used throughout Appian tutorials. Skip the steps in this section if you've already created this application in another tutorial.
To begin with, we need to create an application to contain our design objects.
We will be creating the Appian Tutorial application for this tutorial. All of Appian's tutorials use the Appian Tutorial application as the reference application. After completing this tutorial, you can reuse this application as you work through other Appian tutorials.
To create the Appian Tutorial application:
In the Create New Application dialog, configure the following properties:
| Property | Description |
|---|---|
| Name | Enter Appian Tutorial. |
| Prefix | Keep the default prefix, AT, which Appian constructs using the initial characters of each word you entered in the Name parameter. We'll be following the recommended naming standard, and using this short, unique prefix whenever we name an object in this application. |
| Description | Leave blank. It's normally a best practice to add descriptions to all design objects. However, to save a little time during this tutorial, we'll skip adding descriptions unless the description displays to the end user. |
| Generate groups and folders to secure and organize objects | Keep this checkbox selected, so that Appian will automatically generate standard groups and folders and assign default security groups for this application. |
In the Review Application Security dialog, keep the default security settings. Because we selected the Generate groups and folders option in the previous step, Appian automatically uses the AT Users and AT Administrator groups it generated to set our application security appropriately.
Tip: The security of the application object is unrelated to the security of each of the objects contained within the application. This means that you will need to set security permissions for every object in an application in addition to the application object itself. For more information about security permissions for the application object, see Application Security.
Click SAVE.
Right now, the application contains the folders and groups Appian generated automatically. To see these, click Build in the navigation pane. Each design object that you create during the course of this tutorial will appear in this list in the Build view and be associated with the tutorial application.
If you already have access to the Authorize.Net API, you can skip to the next section.
Otherwise, register an account. It is free of charge and takes less than a minute.
After you have registered, record your account login information, along with the API LOGIN ID and TRANSACTION KEY that displays after registration.
In Appian, create constants to hold the value of your Authorize.Net API LOGIN ID and TRANSACTION KEY.
Note: You can store these constants in the AT Rules & Constants folder that Appian generated during application creation.
These constants will be used in later steps to identify you when calling the Authorize.Net API.
You'll create an HTTP connected system to represent Authorize.Net and use it in each of the individual integrations.
https://apitest.authorize.net/xml/v1/request.api
You'll use the Payment Transactions API to charge a credit card. The API documentation includes a wide variety of transaction features, but for this tutorial you'll just submit a simple request.
To create the credit card payment integration:
In the expression box, copy and paste the following expression to create the request body:
Tip: This expression comes from Authorize.Net's charge a credit card documentation. We simplified the request and replaced the name: and transaction: key fields with the constants we created earlier.
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{
"createTransactionRequest": {
"merchantAuthentication": {
"name": cons!AUTHORIZE_DOT_NET_API_LOGIN_ID,
"transactionKey": cons!AUTHORIZE_DOT_NET_TRANSACTION_KEY
},
"transactionRequest": {
"transactionType": "authCaptureTransaction",
"amount": "100.00",
"payment": {
"creditCard": {
"cardNumber": "5424000000000015",
"expirationDate": "2025-12",
"cardCode": "999"
}
}
}
}
}
Click Test Request. You should receive a result with a status code of 200 and a body containing a transactionResponse with a message indicating that "This transaction has been approved".
You now have a working integration! However, this integration isn't that useful because it can only charge a specific amount to a specific card.
Add rule inputs for the credit card information and the transaction amount to allow the integration to be used for any payment.
Update the Body expression to use the new rule inputs:
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{
"createTransactionRequest": {
"merchantAuthentication": {
"name": cons!AUTHORIZE_DOT_NET_API_LOGIN_ID,
"transactionKey": cons!AUTHORIZE_DOT_NET_TRANSACTION_KEY
},
"transactionRequest": {
"transactionType": "authCaptureTransaction",
! "amount": tostring(ri!amount),
"payment": {
"creditCard": {
! "cardNumber": ri!cardNumber,
! "expirationDate": tostring(ri!expirationDate),
! "cardCode": tostring(ri!cvv)
}
}
}
}
}
Tip: We used tostring() for the amount, expirationDate, and cvv rule inputs because they are Number data types. However, when sending the request via JSON, Authorize.Net requires the values to be sent as a string. Since cardNumber is already a Text data type, it does not need to be converted to a string.
You can configure the error handling to return more appropriate errors that will help both you and the end user.
By default, an integration will be considered successful if the system returns a status code of 200. However, even with a 200 status code, the integration could still return an error.
For example, if the card is expired, the integration will respond with a 200 error code because the request was transmitted successfully. However, it will also contain an error message that the transaction was not completed because the card is expired.
In contrast, if there is something wrong with the URL, you will receive a 404 status code, which means that the requested URL could not be found. This means that the request was not transmitted successfully and will result in a different type of error message.
Notice in the following expressions that the function variable fv!result and dot notation is used to identify the hierarchy of parameters in the response. For example, fv!result.body.messages.resultCode will identify the resultCode parameter in the response.
Update the Success Criteria expression with:
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if(
fv!success,
! if(
/*In the response, if the resultCode parameter is "Error,"
or the errors parameter is not null,
return false*/
! or(fv!result.body.messages.resultCode = "Error", not(isnull(fv!result.body.transactionResponse.errors))),
! false,
! true
! ),
false
)
Update the Error Message expression with:
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!if(
/*In the response, if the statusCode parameter is 200,
return "Transaction Could not be Completed"
and the value of the first errorText parameter*/
! fv!result.statusCode = 200,
! a!integrationError(
! title: "Transaction Could not be Completed",
! message: fv!result.body.transactionResponse.errors[1].errorText
! ),
/*Otherwise, return the title, message, and detail of the IntegrationError*/
a!integrationError(
title: fv!error.title,
message: fv!error.message,
detail: fv!error.detail
)
!)
You will use the AuthorizeCreditCardPayment integration in an interface to allow users to pay for goods or services. The form data used in the interface is hardcoded. You will need to update the form to work with a real application.
Open the interface, click EXPRESSION, then copy and paste the following expression into the Interface Definition to create the interface:
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a!localVariables(
local!gridData: {
{description: "Mobile device for demos", category: "Hardware", qty: 2, unitPrice: 150, amount: 300},
{description: "Video software upgrade", category: "Software", qty: 1, unitPrice: 50.99, amount: 50.99},
{description: "Device accessories", category: "Miscellaneous", qty: 2, unitPrice: 30.99, amount: 61.98}
},
local!cardNumber,
local!expirationDate,
local!cvv,
local!amount: sum(index(local!gridData, "amount", 0)),
local!paymentComplete: false,
local!paymentErrorMessage,
local!paymentConfirmationMessage,
a!formLayout(
label: "Submit Credit Card Payment",
contents: a!columnsLayout(
columns: {
a!columnLayout(
contents: {
a!sectionLayout(
label: "Order Summary",
contents: {
a!richTextDisplayField(
label: "Total",
value: a!richTextItem(text: a!currency(
isoCode: "USD",
value: local!amount
),
size: "LARGE")
),
a!gridLayout(
label: "Items",
labelPosition: "ABOVE",
headerCells: {
a!gridLayoutHeaderCell(label: "Description"),
a!gridLayoutHeaderCell(label: "Category"),
a!gridLayoutHeaderCell(label: "Qty", align: "RIGHT"),
a!gridLayoutHeaderCell(label: "Unit Price", align: "RIGHT"),
a!gridLayoutHeaderCell(label: "Amount", align: "RIGHT")
},
rows: {
a!forEach(
items: local!gridData,
expression:
a!gridRowLayout(
contents: {
a!textField(
value: fv!item.description,
readOnly: true
),
a!textField(
value: fv!item.category,
readOnly: true
),
a!integerField(
value: fv!item.qty,
readOnly: true
),
a!textField(
value: a!currency(
isoCode: "USD",
value: fv!item.unitPrice
),
readOnly: true
),
a!textField(
value: a!currency(
isoCode: "USD",
value: fv!item.amount
),
readOnly: true
)
}
)
),
a!gridRowLayout(
contents: {
a!textField(
value: "",
readOnly: true
),
a!textField(
value: "",
readOnly: true
),
a!textField(
value: "",
readOnly: true
),
a!textField(
value: "Total",
readOnly: true
),
a!textField(
value: a!currency(
isoCode: "USD",
value: local!amount
),
readOnly: true
)
}
)
},
selectionSaveInto: {},
validations: {},
shadeAlternateRows: true
)
}
)
}
),
a!columnLayout(
contents: {
a!sectionLayout(
label: "Payment Information",
contents: {
a!textField(
label: "Card Number",
labelPosition: "ABOVE",
placeholder: "0000111122223333",
value: local!cardNumber,
saveInto: {
local!cardNumber,
a!save(local!paymentErrorMessage, null)
},
refreshAfter: "KEYPRESS",
required: true,
disabled: local!paymentComplete
),
a!integerField(
label: "Expiration Date",
labelPosition: "ABOVE",
placeholder: "MMYY",
value: local!expirationDate,
saveInto: {
local!expirationDate,
a!save(local!paymentErrorMessage, null)
},
refreshAfter: "KEYPRESS",
required: true,
disabled: local!paymentComplete
),
a!integerField(
label: "cvv",
labelPosition: "ABOVE",
placeholder: "999",
value: local!cvv,
saveInto: {
local!cvv,
a!save(local!paymentErrorMessage, null)
},
refreshAfter: "KEYPRESS",
required: true,
disabled: local!paymentComplete
),
if(local!paymentComplete,
{
a!richTextDisplayField(
value: {
a!richTextImage(image: a!documentImage(document: a!iconIndicator(icon: "STATUS_OK"))),
a!richTextItem(text: "Payment Complete! ", size: "MEDIUM"),
a!richTextItem(text: "Transaction ID " & local!paymentConfirmationMessage, style: "UNDERLINE")
}
)
},
a!buttonLayout(
primaryButtons: {
a!buttonWidget(
label: "Place Your Order",
saveInto: {},
style: "PRIMARY",
disabled: not(isnull(local!paymentErrorMessage)),
loadingIndicator: true,
validate: true
)
}
)
),
a!richTextDisplayField(
value: a!richTextItem(text: "Credit card transactions are handled by our secure payment processor. We do not store your credit card information.", style: "EMPHASIS")
),
a!richTextDisplayField(
value: a!richTextItem(text: "When you click the 'Place Your Order' button, we'll send you an email message acknowledging receipt of your order. Your contract to purchase an item will not be complete until we send you an email notifying you that the item has been shipped.", style: "EMPHASIS")
)
},
validations: if(isnull(local!paymentErrorMessage),
{},
local!paymentErrorMessage
)
)
}
)
}
),
buttons: a!buttonLayout(
primaryButtons: {
a!buttonWidget(
label: "Continue",
submit: true,
style: "PRIMARY",
disabled: not(local!paymentComplete),
)
}
)
)
)
The interface will display and you can enter credit card information, but nothing will be submitted when you click the Place Your Order button because we haven't yet added the integration.
Notice that when you click the Place Your Order button, an animated loading indicator appears on the button while it's processing. On interfaces like this one that take longer to load submissions, the loading indicator animation lets users know that their request is being processed.
You'll now update the form to call the AuthorizeCreditCardPayment integration so that credit card transactions are sent to Authorize.Net.
Add the integration to the interface using the following steps:
In the interface expression, call the integration into the Place Your Order button by copying and pasting the following expression into the button's saveInto parameter:
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{
rule!AuthorizeCreditCardPayment(
cardNumber: local!cardNumber,
expirationDate: local!expirationDate,
cvv: local!cvv,
amount: local!amount,
onSuccess: {
/* Handle successful payment and show confirmation */
a!save(local!paymentErrorMessage, null),
a!save(local!paymentComplete, true),
a!save(
local!paymentConfirmationMessage,
fv!result.body.transactionResponse.transId
),
},
onError: {
/* Handle HTTP error */
a!save(local!paymentErrorMessage, fv!error.message),
}
)
}
When processing the results of the integration, the interface in this tutorial handles several different scenarios:
404 status code) or a network error (such as a request timeout) occurs, the onError input will be executed. When this happens the interface will show the error message in the function variable fv!error.message to the user.200 status code, the onSuccess input will be executed. The interface parses the response body in fv!result.body and updates the form depending on the if the response contains an error or not.
If the body contains an error message (such as duplicate transaction or invalid credit card number), the interface will show that error message to the user.
If the body contains a successful transaction ID, the interface will show that ID as a confirmation to the user.
Tip: When creating your own integrations test different scenarios in the integration object to see how the external system responds. The integration object shows the result and error that will be returned when the integration is called from an interface (or other object) so that you can decide how to handle each response.
You'll use the Transaction Reporting API to get the list of unsettled transactions.
Create a new integration and configure it by following these steps:
In the expression box, copy and paste the following expression to create the request body:
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{
"getUnsettledTransactionListRequest": {
"merchantAuthentication": {
"name": cons!AUTHORIZE_DOT_NET_API_LOGIN_ID,
"transactionKey": cons!AUTHORIZE_DOT_NET_TRANSACTION_KEY
}
}
}
200 and a body containing a list of transactions.
You now have a working integration! However, this integration isn't that useful because it can only get the default page of results.
Add rule inputs to allow the integration to control how the transaction list is retrieved. You'll use a PagingInfo data type and transform it into the paging and sorting inputs expected by the Authorize.Net API.
Update the Body expression to use the new rule input:
Tip: This expression comes from Authorize.Net's get unsettled transaction list documentation. We replaced the name: and transaction: key fields with the constants we created earlier. We also used rule inputs to pass sorting information into the integration. We will be setting the sorting parameters in the local!pagingInfo variable in the interface.
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{
"getUnsettledTransactionListRequest": {
"merchantAuthentication": {
"name": cons!AUTHORIZE_DOT_NET_API_LOGIN_ID,
"transactionKey": cons!AUTHORIZE_DOT_NET_TRANSACTION_KEY
}`,`
! "sorting": {
! "orderBy": ri!pagingInfo.sort[1].field,
! "orderDescending": not(ri!pagingInfo.sort[1].ascending)
! },
! "paging": {
! "limit": ri!pagingInfo.batchSize,
! "offset": tointeger((ri!pagingInfo.startIndex - 1) / ri!pagingInfo.batchSize) + 1
! }
}
}
a!pagingInfo() and a!sortInfo(). For example, you can enter the following expression:
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a!pagingInfo(
startIndex: 1,
batchSize: 2,
sort: a!sortInfo(
field: "submitTimeUTC",
ascending: false
)
)
In this section you will use the GetUnsettledTransactionList integration in a paging grid with the ability to page and sort the list of transactions.
Open the interface, click EXPRESSION, then copy and paste the following expression into the Interface Definition to create the interface:
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=a!localVariables(
/* Set up the initial paging and sorting values */
local!pagingInfo: a!pagingInfo(
startIndex: 1,
batchSize: 1000,
sort: a!sortInfo(
field: "submitTimeUTC",
ascending: false)
),
/* Call the external system to return transactions using the paging info provided in local!pagingInfo*/
local!transactionListPage: rule!GetUnsettledTransactionList(pagingInfo: local!pagingInfo).result.body.transactions,
{
a!gridField(
data: local!transactionListPage,
pageSize: 5,
columns: {
a!gridColumn(
label: "Transaction ID",
sortField: "id",
value: fv!row.transId
),
a!gridColumn(
label: "Type",
value: fv!row.accountType
),
a!gridColumn(
label: "Account",
value: fv!row.accountNumber
),
a!gridColumn(
label: "Amount",
value: a!currency(
isoCode: "USD",
value: if(isnull(local!transactionListPage), {}, fv!row.settleAmount)
)
),
a!gridColumn(
label: "Submitted Time (UTC)",
sortField: "submitTimeUTC",
value: if(isnull(local!transactionListPage), {}, fv!row.submitTimeUTC)
)
}
)
}
)
The grid will display and you can sort and page through the available transactions.
If you encounter problems when configuring the integrations, refer to the Authorize.Net API documentation and use the integration object to test different configurations and input values and to view the HTTP request and response.
Integration Tutorial
