---
title: "External method ID"
canonical: "https://ingrid-support.refined.site/space/KB/11437075/External%20method%20ID"
format: markdown
---
## This article describes the concept of External method ID in Ingrid, its logic and the usage.

### What is an External method ID?

External method ID is an unique carrier product identifier stored in a Merchant's WMS or TA system.

![image](media://15017bd0-6c61-4b2d-82a3-c52c59e1df7f)

### Setup Guidance

#### Background

In your 3PL, WMS (Warehouse Management System) or TA (Transport Administration) systems, a carrier service is defined with a special code/ID. Just like in Ingrid - every carrier product is defined with a product code seen below a product name. For example, UPS Standard internal Ingrid code is ups-std:In order to link a chosen shipping option in Ingrid with the shipping method in your WMS, the external method ID is used.

![image](media://5e764356-4429-4b65-b886-8ff5cbf9b2fd)

There you have to define a unique identifier of a particular carrier service from your WMS/TA (depending on the booking flow).

Eventually external method ID will land in the delivery information of the order.  


![image]()

> ℹ️ External method id is a mandatory setting to define, otherwise the booking information flow could be unpredictable.

### Setting External method id in Ingrid Platform

Steps:

1. Go to Delivery Checkout > Regions > Specific region > Specific carrier product
2. Define an External method id

![image](media://fb133044-3bf1-4648-885b-f0feed613916)