MTL_UOM_CONVERSIONS
Schema: INVmasterIntra-class UOM conversion rates to each class's base unit — both standard conversions and item-specific overrides, distinguished by the item id
INVENTORY_ITEM_ID = 0 is the standard (item-independent) conversion row; an item-specific row for the same UOM wins over it — Oracle's own conversion logic reads both and prefers the item row. Cross-class conversions live in MTL_UOM_CLASS_CONVERSIONS (later wave). Conversions are global (no org column).
What the badges mean
- Schema: INV
- Schema: the Oracle product schema that owns the table (INV, ONT, WSH, PO, BOM, WIP, MRP, MSC, AR, AP, GL, HR, APPLSYS) — tells you which product family the object belongs to, not who can query it.
- master
- Data class: what the table holds — master data, transaction documents, control/configuration, interface/staging, or an APPS-schema view.
- OU-striped (ORG_ID)
- Rows are scoped to an operating unit. A landed extract carries every operating unit’s rows — filter or join on
ORG_ID, and don’t confuse it withORGANIZATION_ID(see the quirks guide). - Per inventory org
- Rows are scoped to an inventory organization (plant or warehouse) via
ORGANIZATION_ID— a different partition from OU-striped tables (see the quirks guide). - Language-striped
- The table carries a
LANGUAGEcolumn (a _TL translation table or FND_LOOKUP_VALUES) — one row per language. Filter to oneLANGUAGEor a join multiplies rows (see the quirks guide). - View
- This is an APPS-schema convenience view, not a physical table. Extract the base tables it joins instead — views can be slow at scale and aren't guaranteed stable across patches.
Structural facts — how the table is partitioned, not a trap by itself
Join & extract hazards — verify before you rely on this
Fields
6 fields · 2 key
6 fields.
| # | Field | Description | Type | Flags |
|---|---|---|---|---|
| 1 | INVENTORY_ITEM_ID | Item id — 0 marks the standard (item-independent) conversion; an item-specific row wins over it | NUMBER | Primary-key field |
| 2 | UOM_CODE | The unit being converted to its class base unit | VARCHAR2 | Primary-key field |
| 3 | UNIT_OF_MEASURE | The unit's 25-char name form | VARCHAR2 | |
| 4 | UOM_CLASS | The class the conversion stays within — cross-class conversions live elsewhere | VARCHAR2 | |
| 5 | CONVERSION_RATE | Multiplier from this unit to the class base unit | NUMBER | |
| 6 | DISABLE_DATE | When the conversion was disabled — NULL while active | DATE |
Field provenance: hand-curated. 2 key fields.
Boilerplate SQL
Starting point for reading MTL_UOM_CONVERSIONS on Databricks — real DATE columns need no conversion, and the org anchor is already in place. The optional LAST_UPDATE_DATE watermark is included. Set your Unity Catalog location, schema, and org values below; they’re substituted into the SQL and the copy button.
5 parameters not filled: <catalog>, <schema>, <INVENTORY_ITEM_ID>, <UOM_CODE>, <watermark>
-- ============================================================
-- Table : MTL_UOM_CONVERSIONS — Intra-class UOM conversion rates to each class's base unit — both standard conversions and item-specific overrides, distinguished by the item id
-- Purpose: Column-selected read of MTL_UOM_CONVERSIONS — auto-generated from field metadata
-- Grain : One row per INVENTORY_ITEM_ID + UOM_CODE
-- Notes : Auto-generated skeleton for Oracle EBS R12 data landed in your lakehouse. Dates are real DATE/TIMESTAMP columns — no conversion needed. WHO audit columns omitted (see the quirks guide); the optional LAST_UPDATE_DATE watermark filter supports incremental extracts.
-- ============================================================
SELECT
t.INVENTORY_ITEM_ID AS "Item id — 0 marks the standard (item-independent) conversion; an item-specific row wins over it",
t.UOM_CODE AS "The unit being converted to its class base unit",
t.UNIT_OF_MEASURE AS "The unit's 25-char name form",
t.UOM_CLASS AS "The class the conversion stays within — cross-class conversions live elsewhere",
t.CONVERSION_RATE AS "Multiplier from this unit to the class base unit",
t.DISABLE_DATE AS "When the conversion was disabled — NULL while active"
FROM <catalog>.<schema>.MTL_UOM_CONVERSIONS t
WHERE
1 = 1 -- no partition column on this table; the filters below are optional
-- AND t.INVENTORY_ITEM_ID = <INVENTORY_ITEM_ID>
-- AND t.UOM_CODE = '<UOM_CODE>'
-- AND t.LAST_UPDATE_DATE >= TIMESTAMP '<watermark>' -- WHO watermark, bulk-stamped by batch jobs; see quirks guide #who-columns
ORDER BY t.INVENTORY_ITEM_ID;Verified September 2026
Relationships
Diagram of 1-hop neighbors — join details below. FND lookup decode and translation edges are highlighted; they’re the joins newcomers most often get wrong.
Join details
ON MTL_UOM_CONVERSIONS.UOM_CODE = MTL_UNITS_OF_MEASURE_TL.UOM_CODEON MTL_UOM_CONVERSIONS.INVENTORY_ITEM_ID = MTL_SYSTEM_ITEMS_B.INVENTORY_ITEM_ID
More Item & Product Master tables
- MTL_CATEGORIES_BThe category master — one row per category code combination, with the SEGMENTn flexfield columns the category name concatenates from, keyed by the flexfield structure
- MTL_CATEGORY_SETS_BCategory set definitions — validation rules, control level (master-org vs org-level), the multiple-assignments flag, and the default category new items inherit
- MTL_CROSS_REFERENCES_BItem cross-references — maps items to external identifiers (GTINs, superseded part numbers, customer and supplier part numbers) by cross-reference type, either per organization or org-independent
- MTL_ITEM_CATEGORIESThe item-to-category assignment — one row per item, organization, category set, and category; the bridge every category rollup crosses
- MTL_ITEM_REVISIONS_BItem revisions — one row per revision level of an item in an organization, with effectivity and implementation dates and the change notice that introduced it
- MTL_SYSTEM_ITEMS_BThe item master — one row per item per inventory organization, carrying identity (the SEGMENTn flexfield the user-visible item number concatenates from), status, unit of measure, and the control flags for every functional area; every balance, transaction, and order line joins back to it on INVENTORY_ITEM_ID + ORGANIZATION_ID