1. Create a connection for QuickBooks
2. Create a custom function in FSM

Create a connection for QuickBooks

1. Navigate to Setup > Automation > Connections.
   
2. Select Default Services and click QuickBooks.
   
   
   
   
3. Click Create Connection.
   
   
   
   
4. Enter the following details and click Create And Connect:
   a. Enter a Connection Name, say QuickBooks.
       The Connection Link Name will be populated automatically.
   b. Disable Use Credentials of Login User.
   c. Select the scope com.intuit.quickbooks.accounting.
   
   
   
   
5. Click Connect.
   
   
   
   
6. Click Proceed on the authorization screen.
   
   
   
   
7. Log in to your QuickBooks account.
   
   
   
   
8. Choose an option for verification.
   
   
   
   
9. Complete the verification.
   
   

Create a custom function in FSM

1. Navigate to Setup > Automation > Functions and click Create Function.
   
2. Enter the following details:
   a. Function Name: QuickBooksTest
   b. Select a Module, say, Contacts
   c. Copy the script below:
   
   

   response = invokeurl   [    url :"https://quickbooks.api.intuit.com/v3/company/<companyId>/customer/<customerId>"    type :GET    connection:"quickbooks"   ];   info response;

1. companyId
   The Company ID can be found at Settings > Account and Settings > Billing & subscription. Remove the spaces in the Company ID.
   
   
   
   
2. customerId
   Select a customer from the Customers & leads menu. The Customer ID (nameId) can be found in the address bar.
   
   
   
   
3. the value to be given for connection is the Connection Link Name (refer to the screenshot below).
   
   

1. In the Deluge Script Editor, click Save & Execute.
   
   
   
   
2. In the Execute Function pop-up, enter a Record ID or click Click here to get the list to obtain the list of available records.
   
   
   
   
3. Select a record and click Execute.
   
   
   
   
4. Click Execute.