How Units of Measurement work in techOMS [Information]

Last updated: September 29, 2026

When techOMS interacts with other systems—either fulfillment or sales channels—it must manage various Unit of Measurement (UOM) modes and schemas. This article explains how UOMs are handled in techOMS and the types it supports. 



UOM MANAGEMENT IN TECHOMS



techOMS stores measurements in millimeters (mm) for length and grams (g) for weight. You can set the UOM for display in the UI and for GET API requests.



WARNING: The Calculate Time & Transit Action for sales order rules, always send weight in pounds (lbs) to techSHIP.



UOM HANDLING BY CHANNELS



techOMS channels synchronize products, shipments, and packages using their dimensions and weight. The UOM synchronization applies only to products, not to shipments or packages. 









PRODUCT UOM SOURCE
TYPE
MODE
DESCRIPTION
RECEIVINGSENDING
1
Dynamic
You can select the UOMs as supported by the channel.

Product-specificChannel settings
2
StaticYou can use (but not select) UOMs as supported by the channel.Channel settingsChannel settings
3
NoneNo predefined UOMs.

Displays all UOMs supported by techOMS.		Channel settingsChannel settings



CHANNEL DETAILS AND LIMITATIONS



techOMS channels synchronize products, shipments and packages with dimensions and weight.



The task related to UOMs is products synchronizing only.



  • Shopify: Only supports and sends weight measurements.

  • Extensiv IM: Does not provide measurements.

  • Datex: Only sends product measurements to external systems.

  • Ewarehousing V1: Only receives weight from external systems.

  • Shipfusion: Only exchanges measurements in ounces and inches.

  • SKUVault: Only receives weight from external systems.

  • WMS123: Does not provide measurements.

  • Synapse: Does not provide measurements.

  • Extensiv: Supports only kilograms and centimeters or pounds and inches. Other combinations are not supported.