# Connecting a dimensioning system: how measurement data gets into your WMS, TMS or ERP

*Triggers, data routes and what you need for the connection*

How a dimensioning system connects to a WMS, TMS or ERP: trigger, REST API, QR code and file export at a glance, and when each route fits.

Canonical: https://metrilus.com/en/knowledge/connect-wms-tms-erp

Alternate (de): https://metrilus.com/de/wissen/anbindung-wms-tms-erp

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MetriXFreight gets the measurement data into your system in two standard ways: via REST API,
or as a QR code that your existing barcode scanner transfers into the entry screen. There is
also the export as a file in CSV, XLSX or PDF and the cloud dashboard MetriXOne. The
measurement is triggered automatically, by barcode scan or through the API.

From the S140 to the L63x, the interface is the same on all product lines. The measured
values are the same on every route; only the REST API transmits photos.

## Connection via REST API

*For systems you can adapt*

Your system sends a measurement request with an identifier, such as the package number from the barcode scan or an EAN. MetriXFreight measures and returns the result in one of two ways:

- **Direct Reply:** The result goes straight back to the system that asked, for example your WMS. This system does not have to be a server.
- **Reply to Backend:** The result goes to a system you define beforehand, such as the server of your TMS.

Both routes deliver the same format. How they work in detail is described in the [overview of the REST connection](https://docs.metrilus.com/de/integration-in-die-it-umgebung-metrixfreight-rest-schnittstelle) (in German), and the technical details are in the [guide to the REST interface](https://docs.metrilus.com/de/messungen-%C3%BCber-die-metrix-rest-schnittstelle) (in German).

## Connection via QR code

*No programming*

After the measurement, the system shows a QR code next to the measured values. It contains the agreed values, such as length, width, height and weight. You first scan the package number and then the QR code, and your barcode scanner fills in the fields of your entry screen.

We set up the QR code so that it fits your screen. Images cannot be transferred this way. You can find more in the [guide to QR code export](https://docs.metrilus.com/de/integration-in-ihre-it-umgebung-qr-code-als-daten-export) (in German).

## Which route fits you?

**QR code** fits if a barcode scanner is already attached to your system, you only need
dimensions, volume, weight and master data fields, and you do not need images. All you need
is the scanner at your entry screen.

**REST API** fits if the system that receives the data can be adapted to talk to a REST
interface, and if you want to transfer photos or other data automatically. You decide
between Direct Reply and Reply to Backend, send the measurement request and program the
receipt and processing of the result in your system.

**File export and MetriXOne:** You also get measurement data as a file in CSV, XLSX or PDF. In
[MetriXOne](https://one.metrilus.com) you see all measurements of your systems with photos in
one place and create a measurement report as a PDF for each measurement.

On both standard routes, additional data fields are possible, as well as manual corrections
afterward, notes before sending and submitting at the push of a button. Which route fits when
is also explained in the [overview of export routes](https://docs.metrilus.com/de/welche-m%C3%B6glichkeiten-habe-ich-f%C3%BCr-den-daten-export-um-die-gemessenen-daten-in-mein-system-zu-bekommen) (in German). Our onboarding team supports you
with the connection, and the page on the
[MetriXFreight platform](/en/the-platform-metrixfreight) shows what all product lines
have in common. Which criteria count besides the connection is shown on the page
[Choosing a dimensioning system](/en/knowledge/choose-a-dimensioning-system).

## Frequently asked questions about the connection

### How do I connect a dimensioning system to my warehouse management system?

Either via REST API, if your WMS can send a measurement request and process the result, or via QR code, which your barcode scanner transfers into the entry screen of the WMS. The QR code route needs no programming.

### What data does the measurement deliver to my system?

Length, width, height and volume, with a connected scale also the weight, plus the identifier such as the package number. Via the REST API, photos and additional data fields can be added if needed; via the QR code, only text.

### Can MetriXFreight be connected to SAP EWM?

Yes, via the REST API or the QR code, like any other WMS, TMS or ERP. The prerequisite is that your system can send and receive REST requests or accepts input from a barcode scanner. We clarify this together before you start.

### How is a measurement triggered?

Automatically as soon as you place the shipment under the system, by barcode scan, or by a request from your system via the REST API.

### What do I have to contribute to the connection myself?

For the QR code, a barcode scanner connected to your entry screen. For the REST API, the decision between Direct Reply and Reply to Backend, sending the measurement request and programming the receipt and processing of the result in your system.

### How do I integrate a DWS system into my existing IT?

Like any MetriXFreight system: via REST API or QR code. One measurement captures dimensions and barcode, with a scale also the weight, plus photos that only the REST API transmits. The interface is the same on all product lines.