Oracle Inventory Tables with description

Table Name	Purpose
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MTL_ABC_CLASSES	MTL_ABC_CLASSES contains information about ABC Classes. Each row in this table defines an ABC Class. An ABC Class is a category under which items with similar metrics are put together. The Compile ABC Analysis form allows the user to specify the criterion to be used for defining such metrics. A given ABC Class can be used in more than one ABC Group, but not more than once in a given group.
MTL_ABC_COMPILES	MTL_ABC_COMPILES stores information about each item within an ABC compile. Each row includes an item's sequence number relative to  other items within the given compile, based on the compile criteria defined in MTL_ABC_COMPILE_HEADERS. Each row also contains an item's compile quantity, compile value, cumulative quantity, and cumulative value. Oracle Inventory uses this information to provide an ordered sequence of items, to which the user can then assign an ABC Class.
MTL_CATEGORIES_B	MTL_CATEGORIES_B is the code combinations table for item categories. Items are grouped into categories within the context of a category set to provide flexible grouping schemes. The item category is a key flexfield with a flex code of MCAT. The flexfield structure identifier is also stored in this table to support the ability to define more than one flexfield structure (multi-flex). Item categories now support multilingual category description. MLS is implemented with a pair of tables: MTL_CATEGORIES_B and MTL_CATEGORIES_TL. MTL_CATEGORIES_TL table holds translated Description for Categories.
MTL_CATEGORY_SETS_B	MTL_CATEGORY_SETS_B contains the entity definition for category sets. A category set is a categorization scheme for a group of items. Items may be assigned to different categories in different category sets to  represent the different groupings of items used for different purposes.
MTL_CC_SERIAL_NUMBERS	This table is used to store serial numbers associated to a cycle count entry involving a serialized item. This table is used only when the user has selected the serial control option "Count: Multiple Per Request" in the corresponding cycle count header.
MTL_CC_SUBINVENTORIES	MTL_CC_SUBINVENTORIES stores all the subinventories that are to be considered for cycle counting when the scope of the cycle count is at subinventory level. The table is not used if the cycle count is at organization level. Oracle Inventory uses this information in the automatic scheduling feature of cycle counting and for validation purpose when schedule requests are manually entered.
MTL_CROSS_REFERENCES	MTL_CROSS_REFERENCES is used to assign cross-references to items. The cross reference type code identifies the cross-referencing identification system being used. The cross-reference identifies the specific relationship between the item and the other identification system. This can include references to an old item identification scheme, to supplier item identification, etc. Each inventory item can be assigned any number of cross-references for any number of cross- reference types.
MTL_CROSS_REFERENCE_TYPES	MTL_CROSS_REFERENCE_TYPES is used to define cross-reference types. The cross reference type provides context information for cross-referencing from an item to some other identification system that is relevant. This can include references to an old item identification scheme, to supplier item identifications, etc. Each inventory item can be assigned cross-references using any number of cross-reference types.
MTL_CUSTOMER_ITEMS	MTL_CUSTOMER_ITEMS stores customer item information for a specific customer. Each record can be defined at one of the following levels: Customer, Address Category, and Address. The customer item definition is organization independent.
MTL_DEFAULT_CATEGORY_SETS	MTL_DEFAULT_CATEGORY_SETS stores the identifier of the category set that acts as the default for a particular functional area. This information is used to determine the mandatory category sets for an item. It is also used to provide a default category set for forms and reports that require a category set field value or parameter. . The category set for a given functional area is uaranteed to have a category assignment for each item defined for use by the functional area. For example, the category set for the Inventory functional area is mandatory (and defaults) for all items defined as Inventory items. This ensures that for a given functional area, there will be a category set that contains all of the items for that functional area.
MTL_DEMAND	This table stores demand and reservation information used in Available To Promise, Planning and other Manufacturing functions. There are three major row types stored in the table: Summary Demand rows, Open Demand Rows, and Reservation Rows.
MTL_DESCRIPTIVE_ELEMENTS	MTL_DESCRIPTIVE_ELEMENTS stores the descriptive element definitions for an item catalog group. Descriptive elements are defining properties used to describe in the catalog group.
MTL_ITEM_ATTRIBUTES	MTL_ITEM_ATTRIBUTES table stores information on item attributes. Each row in the table corresponds to an attribute. The table stores the attribute name, the corresponding user-friendly name seen by the users, and the kind of validation enforced on the attribute.
MTL_ITEM_CATALOG_GROUPS_B	MTL_ITEM_CATALOG_GROUPS_B is the code combinations table for item catalog groups. An item catalog group consists of items that can be described by the same set of descriptive elements or item properties. When an item is associated with an item catalog group, the item inherits the descriptive elements for that group which then behave like additional item attributes. The user can specify values for the descriptive elements and can use that information to search for items using the Item Search window.
MTL_ITEM_CATEGORIES	MTL_ITEM_CATEGORIES stores inventory item assignments to categories within a category set. For each category assignment, this table stores the item, the category set, and the category. Items always may be assigned to multiple category sets. However, depending on the Multiple Assignments Allowed attribute value in a given category set definition, an item can be assigned to either many or only one category in that category set.
MTL_ITEM_LOCATIONS	MTL_ITEM_LOCATIONS is the definition table for stock locators. The associated attributes describe which subinventory this locator belongs to, what the locator physical capacity is, etc.. The locator is a key flexfield. The Flexfield Code is MTLL.
MTL_ITEM_LOC_DEFAULTS	MTL_ITEM_LOC_DEFAULTS contains the optional default locators for shipping and receiving purposes. The LOCATOR_ID and SUBINVENTORY_CODE identify the exact locator/subinventory which one wishes to have as default. The DEFAULT_TYPE indicates whether it is the default shipping or receiving subinventory/locator. Also see MTL_ITEM_SUB_DEFAULTS.
MTL_ITEM_REVISIONS_B	MTL_ITEM_REVISIONS stores revision levels for an inventory item. When an item is defined a starting revision record is written out to this table, so every item will at least have one starting revision. The presence of an engineering change notice code in this table indicates that the engineering system issued the revision through the implementation process. Along with the engineering change order, an implementation date and initiation date will be stored.
MTL_ITEM_STATUS	MTL_ITEM_STATUS is the definition table for material status codes. Status code is a required item attribute. It indicates the status of an item, i.e., Active, Pending, Obsolete. The status optionally controls several 'function controlling' item attributes (status attributes) and can be used to disable the item from being used by the various application products. The values of the individual status attributes associated with an item status are stored in MTL_STATUS_ATTRIBUTE_VALUES.
MTL_ITEM_SUB_DEFAULTS	MTL_ITEM_SUB_DEFAULTS contains the list of optional default shipping and receiving subinventories for items in an organization. This information is used by Oracle Order Management, Oracle Shipping Execution, and Oracle Purchasing respectively. DEFAULT_TYPE indicates whether the subinventory is meant for default shipping or receiving.
MTL_ITEM_SUB_INVENTORIES	MTL_ITEM_SUB_INVENTORIES maintains a listing of subinventories assigned to an inventory or engineering item. These subinventories make up the list of valid subinventories when transacting this specific item and the user has specified (in the master window) that the item must use subinventories restricted to a pre-defined list.
MTL_ITEM_TEMPLATES	MTL_ITEM_TEMPLATES is the definition table for item templates. It contains the user-defined name (TEMPLATE_NAME) and description (DESCRIPTION). You can use a template to set certain item attributes. When you apply a template to an item, the enabled item attributes are propagated to the item. You may apply several different templates to an item to achieve a layering of attributes.
MTL_ITEM_TEMPL_ATTRIBUTES	MTL_ITEM_TEMPL_ATTRIBUTES stores the attributes and attribute values for item templates. When a template is created, a row is inserted for each available item attribute. The user can then specify values for and enable each template attribute for later use. When the template is applied to an item, the enabled attribute values are propagated to the item.
MTL_LOT_NUMBERS	MTL_LOT_NUMBERS stores the definition and expiration date of all lot numbers in inventory. Since the primary key consists of LOT_NUMBER, ORGANIZATION_ID, and INVENTORY_ITEM_ID, a lot number could exist in more than one organization or for different items.
MTL_MATERIAL_STATUSES_B	MTL_MATERIAL_STATUSES_B is the base table for the inventory statuses. It contains all the attributes which are not translated and don't vary by language. The defined status can be assigned to Subinventory, locator, lot and serial to restrict certain transaction types.
MTL_MATERIAL_TRANSACTIONS	MTL_MATERIAL_TRANSACTIONS stores a record of every material transaction or cost update performed in Inventory.
MTL_TXN_REQUEST_HEADERS	This table stores all of the move order headers. The headers contain all information which pertains to entire move orders, including the transaction type of the move order, the move order type, the move order status, and the request number of the move order.
MTL_TXN_REQUEST_LINES	The table MTL_TXN_REQUEST_LINES stores all of the move order lines. The lines are requests to move some quantity of an item from a source location to a destination location or account. Each move order line must be tied to a specific move order header. When a line is detailed or pick released, the quantity detailed is updated appropriately and transaction lines are created in MTL_MATERIAL_TRANSACTIONS_TEMP. When the transaction lines are transacted, the quantity delivered is updated.
MTL_ONHAND_QUANTITIES
MTL_PARAMETERS	MTL_PARAMETERS maintains a set of default options like general ledger accounts; locator, lot, and serial controls; inter-organization options; costing method; etc. for each organization defined in Oracle Inventory.
MTL_PHYSICAL_INVENTORIES	MTL_PHYSICAL_INVENTORIES contains certain user-defined options for a physical inventory, including the approvals required, subinventory scope (all or a subset specified in MTL_PHYSICAL_SUBINVENTORIES), tolerances, and whether tags may be created in the Physical Inventory Counts window or whether they must be pre-generated.
MTL_PHYSICAL_SUBINVENTORIES	MTL_PHYSICAL_SUBINVENTORIES specifies which subinventories are involved in a physical inventory when the physical inventory does not include all subinventories. One row per subinventory per physical inventory.
MTL_RESERVATIONS	This table stores reservation information. Each record is a reservation that ties an item/organization combination with a demand source and a supply source. Demand source information comprises demand source type (Sales Order, Account, Account Alias, Inventory), demand source header, demand source line and demand source name. Supply source information comprises supply source type (Inventory, WIP jobs), supply source header, supply source line, supply source name and inventory controls (revision, lot, subinventory, locator).
MTL_SALES_ORDERS	MTL_SALES_ORDERS stores Inventory's local definition of sales orders.
MTL_SECONDARY_INVENTORIES	MTL_SECONDARY_INVENTORIES is the definition table for the subinventory. A subinventory is a section of inventory, i.e., raw material, finished goods, etc. Subinventories are assigned to items (in a many to one relationship), indicating a list of valid places where this item will physically exist in inventory. Other attributes include general ledger accounts, demand picking order, locator type, availability type, and reservable type.
MTL_SECONDARY_LOCATORS	MTL_SECONDARY_INVENTORIES is the definition table for the subinventory. A subinventory is a section of inventory, i.e., raw material, finished goods, etc. Subinventories are assigned to items (in a many to one relationship), indicating a list of valid places where this item will physically exist in inventory. Other attributes include general ledger accounts,  demand picking order, locator type, availability type, and reservable type. You can also specify whether this subinventory is an expense or asset subinventory (ASSET_INVENTORY), or whether quantities are tracked (QUANTITY_TRACKED).
MTL_SERIAL_NUMBERS	MTL_SERIAL_NUMBERS stores the definition and current status of all serial numbers in Oracle Inventory. These serial numbers are also used in other areas of Oracle Manufacturing. A serial number can have one of four statuses: - Defined but not used - Resides in stores - Issued out of stores - Resides in intransit
MTL_SYSTEM_ITEMS_B	MTL_SYSTEM_ITEMS_B is the definition table for items. This table holds the definitions for inventory items, engineering items, and purchasing items. You can specify item-related information in fields such as: Bill of Material, Costing, Purchasing, Receiving, Inventory, Physical attributes, General Planning, MPS/MRP Planning, Lead times, Work in Process, Order Management, and Invoicing. You can set up the item with multiple segments, since it is implemented as a flexfield. Use the standard 'System Items' flexfield that is shipped with the product to configure your item flexfield. The flexfield code is MSTK. The primary key for an item is the INVENTORY_ITEM_ID and ORGANIZATION_ID.   Therefore, the same item can be defined in more than one organization.