The document describes several key tables used in supply chain management in Oracle Applications. MTL_SYSTEM_ITEMS is the base table for defining inventory, engineering, and purchasing items for each organization. MTL_SECONDARY_INVENTORIES defines valid subinventory locations for items. MTL_ITEM_CATEGORIES assigns items to categories within category sets. RCV_TRANSACTIONS contains data on all receiving transactions, including transaction types like deliver, reject, and return. These transaction tables can be linked to other tables like purchase orders and shipments.

1. SUPPLY CHAIN Management
MTL_MATERIAL_TRANSACTIONS Base table for all transactions (etc RCV,Issuance,Sub Inv
Transfer,Inter Org Transfer,Misl Transactions…).
MTL_SYSTEM_ITEMS Table contains all System items organization wise. It is
Base table for items.
This table holds the definitions for inventory items,
engineering items, and purchasing items. The flexfield
code is MSTK. The primary key for an item is the
INVENTORY_ITEM_ID and the ORGANIZATION_ID.
The same item could be defined in more than one
organization. Each row represents an item in an
organization.
MTL_SYSTEM_ITEMS_TL Table contains translated description of each master
item.
The primary key is INVENTORY_ITEM_ID,
ORGANIZATION_ID and LANGUAGE.

2. MTL_TRANSACTION_TYPES
ORG_ACCT_PERIODS
GL_CODE_COMBINATIONS
MTL_SECONDARY_INVENTORIES This table is the definition table for the subinventory. Subinventories are assigned to items, indicating a list of valid places
in which this item may be located. The primary key is SECONDARY_INVENTORY_NAME, ORGANIZATION_ID.
MTL_ITEM_CATEGORIES This table stores the item assignments to categories within a category set. For each assignment, this table stores the item,
category set, and the category. Items can be assigned to multiple categories and category sets, but can be assigned to only
one category in a given category set. This table is populated through either the Define Item or the Update Item/Org
Attributes forms. It can also be populated by performing item assignments when a category set is defined. The primary key
is INVENTORY_ITEM_ID, ORGANIZATION_ID, CATEGORY_SET_ID.
RCV_TRANSACTIONS You can get data of all receiving transactions in this table.
Important columns
TRANSACTION_TYPE like DELIVER,REJECT,ACCEPT,CORRECT,RETURN TO RECEIVING
TRANSFER, RETURN TO VENDOR, RECEIVE.
Also you can directly connect to shipment and purchase order tables for rcv_transactions
By SHIPMENT_HEADER_ID and PO_HEADER_ID.
PO_HEADERS_ALL
PO_LINES_ALL
AP_SUPPLIERS
AP_SUPPLIER_SITES_ALL