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LexWare Office Integration

With the LexWare Office integration, you transfer treatment data directly from TheraTap to LexWare Office. An invoice draft is automatically created there, which you only need to review and send. Contact data is seamlessly carried over.


One Click to an Invoice

Complete a treatment, send to LexWare Office — the invoice draft is immediately ready.

Contacts Synchronized

Pet owners are automatically created in LexWare Office on first transfer.

Custom Invoice Texts

Configure introduction and closing text once — they appear on every invoice.

Direct Link to LexWare Office

Open the invoice draft directly in LexWare Office with one click.


  • LexWare Office XL – The API interface requires the LexWare Office XL package
  • TheraTap subscription – The LexWare Office integration is included as a feature in your plan

  1. Open settings

    Navigate to Settings → LexWare Office.

  2. Enter API key

    Enter your LexWare Office API key. You can find it in your LexWare Office account under the developer settings.

  3. Configure invoice settings

    Set the default values for your invoices:

    • Invoice title – e.g., “Animal Physiotherapy Treatment”
    • Introduction text – Text that appears at the top of every invoice
    • Closing text – Text at the end of the invoice (e.g., payment instructions, thank you message)
  4. Verify connection

    After entering the API key, a green badge indicates that the connection was successfully established.


You can transfer treatment data to LexWare Office from several places:

  1. Open a completed treatment
  2. Click the action menu (three dots)
  3. Select Send to LexWare Office
  4. An invoice draft with the treatment data is automatically created in LexWare Office
  1. Open an invoice in TheraTap
  2. Click Send to LexWare Office
  3. The invoice draft is created in LexWare Office
  4. Via the direct link, you can open and edit the draft directly in LexWare Office

When transferring to LexWare Office, the following data is automatically carried over:

DataDescription
Contact dataName, address, email of the pet owner
Treatment detailsDate, type of treatment
Invoice textsYour configured introduction and closing text

In LexWare Office, you can then adjust the draft as needed, add line items, and finalize the invoice.


To disconnect the LexWare Office connection, remove the API key in the settings. Previously transferred invoice drafts remain in LexWare Office.


Are contacts automatically created in LexWare Office? Yes, if a contact does not yet exist in LexWare Office, it is automatically created on the first invoice transfer.

Can I define invoice line items in TheraTap? The basic data is transferred. Detailed invoice line items and prices are added in LexWare Office.

What happens if the connection is interrupted? You will receive an error message in TheraTap. In that case, check whether your API key is still valid and your LexWare Office account is active.