CATAMA with an API interface to the AutoteilePilotPlus (ATP Plus) parts catalog: The direct path from the catalog to the invoice

Up to 40 minutes per order are wasted in auto repair shops when part numbers, prices, and inventory levels are manually transferred between the supplier catalog and the shop software. This is exactly where the CATAMA parts catalog, with its API interface to AutoteilePilotPlus (ATP Plus), comes in: a direct data channel that feeds product data into the order without any disruption. What used to be copy-and-paste work is now done at the push of a button. Workshops and dealers in the passenger car segment gain speed, avoid typos, and calculate more accurately.

The following sections explain how the integration works, which specific processes benefit from it, and what to keep in mind during setup.

Key Takeaways

• CATAMA, which features an API interface to the AutoteilePilotPlus (ATP Plus) parts catalog, transfers product data, prices, and availability directly into the workshop order.
• Manual data entry errors and duplicate entries are eliminated, and the average order processing time is measurably reduced.
• The API runs in the background via the cloud and does not require any additional on-site hardware.
• Repair shops benefit from accurate cost estimates, transparent margins, and audit-proof documentation.
• The integration fits seamlessly into existing CATAMA workflows, from quotes to orders to invoices.

What the CATAMA interface to ATP Plus actually does

An API (Application Programming Interface) is simply a standardized language used by two programs to communicate with each other. In the case of CATAMA, which has an API interface with the AutoteilePilotPlus (ATP Plus) parts catalog, this means that the workshop software queries the ATP Plus catalog in real time and imports the returned item data directly into the open document.

From searching to finding in seconds

Instead of switching between a browser tab and workshop software, the parts search launches directly from the CATAMA order. The user selects the vehicle, sends the vehicle-specific data to ATP Plus, and receives filtered results: part number, manufacturer, description, purchase price, MSRP, availability, and delivery time. With a single click, the part is added as an item to the order.

This not only saves time, but also reduces one of the most common sources of error in everyday workshop operations: incorrectly entered part numbers.

Exactly what data is transmitted

Integrated into the overall process

The interface is not a standalone feature. It is part of the end-to-end workflow of the CATAMA Kfz Suite auto repair shop software, which covers every step from customer registration to vehicle data entry and invoicing. The ATP-Plus integration comes into play wherever parts need to be incorporated into the process: in cost estimates, quotes, work orders, and the ordering system.

“You can tell a good interface by the fact that you don’t even notice it. Data flows, the process runs smoothly, and the employee focuses on the diagnosis—not on the keyboard.”

Why API integration beats manual processes

Many businesses still use a hybrid model today: parts are searched for in the supplier’s online store, and the data is then transferred to the workshop software—sometimes via copy-paste, sometimes via CSV import, and sometimes entirely by hand. Each of these steps takes time and carries the risk of errors.

Sources of errors that are eliminated with the API

• Transposed digits in part numbers lead to incorrect orders
• Outdated prices erode the calculated margin
• Incorrect product names confuse customers and lead to complaints
• Manual VAT calculation results in rounding differences
• Inventory data without real-time synchronization leads to delivery promises that cannot be kept

The direct API connection eliminates these vulnerabilities because no human intervention is required between the source data and the target document.

Economic impact on order processing

Here’s a practical example: A repair shop that handles five jobs per day, with an average of eight parts per job, saves about 20 minutes per day—per employee—if it saves just 30 seconds per part. Extrapolated over a year, this results in a measurable productivity gain that directly boosts the contribution margin. The article explains in more detail how repair shops save time and money with CATAMA.

Comparison: Manual Workflow vs. API Integration

How CATAMA Works with an Interface (API) to the AutoteilePilotPlus (ATP Plus) Parts Catalog: A Detailed Overview

The technical architecture behind the integration has been deliberately kept lean. CATAMA runs as a cloud-based solution, while ATP Plus provides the catalog data via secure web services. Communication is encrypted, and no additional installation is required in the workshop.

Authentication and login credentials

To enable the API to function, the shop owner enters their ATP-Plus login credentials once in the CATAMA settings. From that point on, the software accesses the catalog on behalf of the business—including all individually negotiated terms. This is important because it ensures that each business sees its own wholesale prices rather than an anonymous list price.

Vehicle lookup by HSN/TSN or VIN

The core of the parts search is the vehicle reference. CATAMA transmits either the HSN/TSN part number or the vehicle identification number (VIN) to ATP Plus. This ensures that the repair shop is shown only parts that are specific to the vehicle—no endless lists of results, just relevant ones.

Search logic and filtering options

You can further narrow down the results within the list:

• By manufacturer: Brand preference based on customer preference
• By quality: OE, OEM, or aftermarket
• Subject to availability: In stock or available to order
• By price range: Budget-friendly selection

Inclusion in a quote or order

Once the correct item has been found, CATAMA adds it to the current document with a single click. This automatically:

1. The record has been created with all the data
2. The EK price has been recorded
3. The selling price calculated according to the pricing formula
4. Correct allocation of VAT
5. Generate a purchase order proposal if necessary

If you would like to learn more about order processing, you can find additional information under Orders, Invoices, and Delivery Slips.

Practical benefits for repair shops and retailers

Theory is one thing; practicality in everyday use is another. The following scenarios illustrate how CATAMA, with its interface (API) to the AutoteilePilotPlus (ATP Plus) parts catalog, makes a difference in day-to-day operations.

Scenario 1: Direct drop-off at the counter

A customer pulls up in front of the service counter. The service representative scans the vehicle registration, CATAMA creates a record for the vehicle, the representative selects “front brake pads”—and immediately sees all the matching items along with prices and delivery times. Within two minutes, the quote is ready, the customer makes a decision, and the order is entered into the system.

Scenario 2: Workshop order with additional work

During an inspection, the mechanic discovers a defective stabilizer bar. Instead of adding the part later, he opens the job on the workshop tablet, searches for the right stabilizer bar using the ATP Plus search function, and adds the item. Workshop management can see in real time what changes are being made to the job and can inform the customer directly.

Scenario 3: Cost Estimate for a Large Order

A fleet customer requests a quote for 15 vehicles, including tire replacement and inspection. Using the ATP Plus interface, quantities and terms can be quickly calculated, and the quote is ready in a fraction of the time it would otherwise take.

Benefits at a Glance

• Faster acceptance thanks to immediate availability of parts and pricing
• Higher conversion rate in the bidding process
• Fewer complaints thanks to accurate product descriptions
• Better margin control thanks to daily updated purchase prices
• Transparent orders with end-to-end traceability

For dealers, the interface adds exactly the feature to automotive software that makes all the difference during sales conversations: parts in stock at current prices.

Setup and Commissioning of the Interface

The integration is designed so that even companies without a dedicated IT department can get up and running quickly. Nevertheless, there are a few points that should be clarified before the first deployment.

Requirements

• An active CATAMA account in a suitable edition (e.g., CATAMA Professional or higher)
• A valid customer agreement with AutoteilePilotPlus, including API credentials
• Reliable internet access in the workshop
• Browser-enabled devices (PC, laptop, tablet)

Step-by-Step Setup

1. Clarify in the contract: Have API access enabled for ATP Plus
2. Receive login credentials: username, password, and API key (if applicable)
3. Configure in CATAMA: Go to Settings > Interfaces
4. Perform a test query: Search for a sample vehicle, check the results
5. Set pricing rules: Which markups should be applied automatically?
6. Training employees: Brief on-the-job training

The entire process usually takes less than an hour to complete. If you have any questions, CATAMA Support is available to assist you with the configuration.

Recommended calculation logic

CATAMA allows you to define different markups for different product categories. A typical configuration might look like this:

These values vary by business and should be reviewed regularly. The hourly rate calculator for auto repair shops also provides a basis for the labor component of the cost estimate.

Interaction with other CATAMA interfaces

It is rare for a repair shop to work with just one parts supplier. That is why the ATP Plus connection is part of a broader ecosystem of interfaces provided by CATAMA. Repair shops can connect to additional catalogs at the same time and use the appropriate channel depending on the specific situation.

Multi-vendor strategy

For example, customers who also purchase genuine replacement parts from Mercedes-Benz can use the Mercedes-Benz WebParts shopping cart import interface as a supplementary tool. Those who work with traditional wholesalers will find a proven solution in the Stakis/Stahlgruber interface. An overview of all available integrations can be found on the page “CATAMA Software Interfaces to Suppliers and E-Commerce.”

Advantages of a standardized document structure

No matter where an item comes from, all line items are displayed identically in the CATAMA order. Customers see a clear invoice, the accounting department receives structured data, and reporting works across all suppliers. This is particularly important for integration with financial accounting systems, such as through the automotive invoicing program with a DATEV interface.

Analysability across all channels

With the right reports, you can analyze:

• Which supplier delivers the fastest?
• Where do we achieve the best margins?
• Which product categories are procured through which channel?
• Which orders are still pending?

This data forms the basis for strategic supplier decisions.

Data Security and Availability

When it comes to a cloud-based interface, two questions arise: What happens to my data, and what if the internet goes down?

Encrypted transmission

All API calls between CATAMA and ATP Plus are made over encrypted connections (HTTPS/TLS). Login credentials are not stored in plain text. CATAMA Kfz Software’s privacy policy governs how customer and operational data are handled—in compliance with the GDPR.

High-availability data center

CATAMA operates its infrastructure in a high-availability data center with comprehensive data security. Backups, redundant systems, and monitoring ensure a high level of reliability. The current operational status can be viewed transparently via the CATAMA System Status.

What should you do if the internet goes down?

Since the API query is performed online, an internet connection is required. However, existing orders with parts that have already been processed remain stored in the system and can still be edited offline until the connection is restored. For critical areas, a secondary internet connection (e.g., LTE backup) is recommended in any case.

Frequently Asked Questions from Real-World Practice

Does the interface also work on a tablet?
Yes. CATAMA is web-based and can be used on all modern devices. The direct search feature is especially handy when using the tablet at the lift in the workshop.

Will my individual ATP Plus terms and conditions be taken into account?
Yes. The API returns the wholesale prices stored for your account. Negotiated terms, bonus tiers, and promotional prices are automatically factored in.

How much does the interface cost?
Depending on the CATAMA edition you choose, the ATP Plus integration is included in the feature set. Details about editions and pricing can be found on the CATAMA Automotive Software – Solutions and Prices 2026 page.

Can I use multiple supplier catalogs at the same time?
Yes, CATAMA supports parallel connections. This means you can run ATP Plus, Partslink24, and WM Kat simultaneously, for example.

How much training is required?
In our experience, employees are able to use the interface effectively after a brief training session (approx. 30 minutes). The interface follows the familiar CATAMA logic.

Conclusion and Next Steps

CATAMA, with its API interface to the AutoteilePilotPlus (ATP Plus) parts catalog, is more than just a technical add-on. It is a tool that streamlines the entire intake and order process in automotive repair shops while enhancing its quality. Anyone who still switches back and forth between a web shop and workshop software today loses time, money, and accuracy on every order. A direct API connection eliminates these inefficiencies.

Specific next steps for interested businesses:

1. Current Situation: How much time is currently spent on manually entering parts? Where do errors occur?
2. Check the ATP Plus contract: Is API access available, or does it need to be activated?
3. Choosing a CATAMA Edition: Which CATAMA suite is right for your company's size and needs?
4. Plan a test phase: Measure the results using a defined pilot period.
5. Involving employees: Even the best system will only work if it is accepted by the team.

If you have any questions about how to implement this in your own business, you can find direct contacts in the CATAMA contact section. Experience shows that a well-configured interface pays for itself within a few months—through time savings, fewer errors, and a much smoother order intake process.