Please only use valid UN/ECE 20 units in the BMEcat fields ORDER_UNIT and CONTENT_UNIT. The following table gives an overview of the common units supported by the Mercateo system.
| Order unit | Description |
| 4G | microlitre |
| AA | ball |
| BE | bundle |
| BG | bag |
| BJ | bucket |
| BL | bale |
| BLI | blister |
| BND | bundle |
| BO | bottle |
| BX | box |
| C4 | card |
| C5 | service |
| C62 | piece |
| CA | can |
| CG | carton |
| CH | container |
| CL | coil |
| CLT | centilitre |
| CMK | square centimetre |
| CMQ | cubic centimetre |
| CMT | centimetre |
| CQ | cartridge |
| CS | case |
| CT | carton |
| CV | cover |
| D64 | block |
| D97 | pallet |
| DAY | day |
| DI | dispenser |
| DPC | dozen |
| DZN | dozen |
| EA | piece |
| ETI | label |
| EV | envelope |
| FOI | foil |
| FOT | foot |
| GRM | gram |
| HUR | hour |
| JR | jar |
| KGM | kilogram |
| KIS | crate |
| KMT | kilometre |
| KST | jerrycan |
| KT | kit |
| LBR | pound |
| LTR | liter |
| M4 | value |
| MC | microgram |
| MGM | milligram |
| MLT | millilitre |
| MMT | millimetre |
| MTK | square metre |
| MTQ | cubic metre |
| MTR | metre |
| NMO | nanomole |
| OP | pack of 2 |
| PA | packet |
| PAD | pad |
| PD | block |
| PF | pallet |
| PK | pack |
| PR | pair |
| QR | quire |
| RD | rod |
| RL | reel |
| RM | ream |
| RO | roll |
| SA | sack |
| SCH | box |
| SET | set |
| SPD | dispenser |
| SR | strip |
| ST | sheet |
| STK | sticker |
| TAB | tab |
| TC | truckload |
| TN | tin |
| TNE | ton |
| TU | tube |
| TUC | cloth |
| WEE | week |
| WP | watt |
| Z3 | cask |