How to connect 123FormBuilder and Lexoffice
Create a New Scenario to Connect 123FormBuilder and Lexoffice
In the workspace, click the “Create New Scenario” button.

Add the First Step
Add the first node – a trigger that will initiate the scenario when it receives the required event. Triggers can be scheduled, called by a 123FormBuilder, triggered by another scenario, or executed manually (for testing purposes). In most cases, 123FormBuilder or Lexoffice will be your first step. To do this, click "Choose an app," find 123FormBuilder or Lexoffice, and select the appropriate trigger to start the scenario.

Add the 123FormBuilder Node
Select the 123FormBuilder node from the app selection panel on the right.

123FormBuilder
Configure the 123FormBuilder
Click on the 123FormBuilder node to configure it. You can modify the 123FormBuilder URL and choose between DEV and PROD versions. You can also copy it for use in further automations.
Add the Lexoffice Node
Next, click the plus (+) icon on the 123FormBuilder node, select Lexoffice from the list of available apps, and choose the action you need from the list of nodes within Lexoffice.

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Authenticate Lexoffice
Now, click the Lexoffice node and select the connection option. This can be an OAuth2 connection or an API key, which you can obtain in your Lexoffice settings. Authentication allows you to use Lexoffice through Latenode.
Configure the 123FormBuilder and Lexoffice Nodes
Next, configure the nodes by filling in the required parameters according to your logic. Fields marked with a red asterisk (*) are mandatory.
Set Up the 123FormBuilder and Lexoffice Integration
Use various Latenode nodes to transform data and enhance your integration:
- Branching: Create multiple branches within the scenario to handle complex logic.
- Merging: Combine different node branches into one, passing data through it.
- Plug n Play Nodes: Use nodes that don’t require account credentials.
- Ask AI: Use the GPT-powered option to add AI capabilities to any node.
- Wait: Set waiting times, either for intervals or until specific dates.
- Sub-scenarios (Nodules): Create sub-scenarios that are encapsulated in a single node.
- Iteration: Process arrays of data when needed.
- Code: Write custom code or ask our AI assistant to do it for you.

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Lexoffice
Trigger on Webhook
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Webhook response

Save and Activate the Scenario
After configuring 123FormBuilder, Lexoffice, and any additional nodes, don’t forget to save the scenario and click "Deploy." Activating the scenario ensures it will run automatically whenever the trigger node receives input or a condition is met. By default, all newly created scenarios are deactivated.
Test the Scenario
Run the scenario by clicking “Run once” and triggering an event to check if the 123FormBuilder and Lexoffice integration works as expected. Depending on your setup, data should flow between 123FormBuilder and Lexoffice (or vice versa). Easily troubleshoot the scenario by reviewing the execution history to identify and fix any issues.
Most powerful ways to connect 123FormBuilder and Lexoffice
123FormBuilder + Lexoffice + Slack: When a new submission is received in 123FormBuilder, a new voucher is created in Lexoffice, and a message is sent to a designated Slack channel to notify the accounting team.
Lexoffice + 123FormBuilder + Google Sheets: When a new voucher is created in Lexoffice, a new row is added to a Google Sheet to track the invoice. The key data is then used to prefill a customer feedback form in 123FormBuilder.
123FormBuilder and Lexoffice integration alternatives
About 123FormBuilder
Streamline data collection by connecting 123FormBuilder to Latenode. Automatically trigger workflows when forms are submitted. Route form data to CRMs, databases, or email marketing tools. Use Latenode to validate entries, calculate scores, and manage follow-ups — automating processes with a no-code, scalable workflow.
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About Lexoffice
Automate accounting tasks by connecting Lexoffice to Latenode. Automatically create invoices, track expenses, or update customer data based on triggers from other apps. Latenode lets you build custom workflows around Lexoffice without code, adding features like advanced data validation or conditional logic that Lexoffice lacks natively.
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See how Latenode works
FAQ 123FormBuilder and Lexoffice
How can I connect my 123FormBuilder account to Lexoffice using Latenode?
To connect your 123FormBuilder account to Lexoffice on Latenode, follow these steps:
- Sign in to your Latenode account.
- Navigate to the integrations section.
- Select 123FormBuilder and click on "Connect".
- Authenticate your 123FormBuilder and Lexoffice accounts by providing the necessary permissions.
- Once connected, you can create workflows using both apps.
Can I automatically create invoices from form submissions?
Yes, you can! Latenode automates invoice creation in Lexoffice whenever a new form is submitted in 123FormBuilder. Save time, reduce errors, and streamline your billing process.
What types of tasks can I perform by integrating 123FormBuilder with Lexoffice?
Integrating 123FormBuilder with Lexoffice allows you to perform various tasks, including:
- Create new Lexoffice contacts from 123FormBuilder submissions.
- Automatically generate invoices in Lexoffice upon form completion.
- Update contact information in Lexoffice based on 123FormBuilder data.
- Send personalized thank-you emails via Latenode after invoice creation.
- Trigger custom workflows based on form data using JavaScript code.
How secure is 123FormBuilder data transfer via Latenode?
Latenode uses encrypted connections and secure data handling practices. Data is protected at every stage of the workflow.
Are there any limitations to the 123FormBuilder and Lexoffice integration on Latenode?
While the integration is powerful, there are certain limitations to be aware of:
- Complex conditional logic may require JavaScript coding.
- Rate limits of 123FormBuilder and Lexoffice APIs may apply.
- File size limits exist for attachments transferred between apps.