Search Results msc_system_items




The MSC_SYSTEM_ITEMS table is a critical data structure in Oracle E-Business Suite (EBS) versions 12.1.1 and 12.2.2, specifically within the Oracle Advanced Supply Chain Planning (ASCP) and Manufacturing modules. This table serves as a repository for item master data that is synchronized between Oracle Inventory (MTL_SYSTEM_ITEMS_B) and the planning engine. Below is a detailed breakdown of its purpose, structure, and key attributes:

Purpose and Context

The MSC_SYSTEM_ITEMS table stores item definitions used by Oracle ASCP for demand forecasting, supply planning, and inventory optimization. It acts as a staging area where item data from source systems (e.g., Oracle Inventory) is transformed and enriched for planning purposes. The table is populated during the "Snapshot" process, which extracts data from transactional systems into the planning engine's schema (MSC). Key use cases include:

  • Item attribute synchronization between inventory and planning modules.
  • Support for multi-organization planning by storing organization-specific item properties.
  • Integration with Bills of Materials (BOM) and routings for manufacturing planning.

Key Columns and Attributes

The table contains over 100 columns, but the most significant ones include:

Column Name Data Type Description
PLAN_ID NUMBER Foreign key to MSC_PLANS, linking items to specific plans.
SR_INSTANCE_ID NUMBER Source system instance identifier (e.g., Inventory instance).
ORGANIZATION_ID NUMBER References HR_ORGANIZATION_UNITS for org-specific data.
INVENTORY_ITEM_ID NUMBER Matches MTL_SYSTEM_ITEMS_B.INVENTORY_ITEM_ID.
ITEM_NAME VARCHAR2(240) Item description from the source system.
PLANNING_MAKE_BUY_CODE NUMBER Determines if an item is planned as Make (1) or Buy (2).
FIXED_LEAD_TIME NUMBER Lead time used in planning calculations.

Technical Considerations

In EBS 12.1.1 and 12.2.2, the table's behavior is influenced by:

  • Snapshot Process: Data is refreshed via concurrent programs like "Refresh Snapshot" (MSCSCREP).
  • Indexing: Key indexes include MSC_SYSTEM_ITEMS_N1 (on PLAN_ID, INVENTORY_ITEM_ID, ORGANIZATION_ID) for query performance.
  • Partitioning: In large implementations, the table may be partitioned by PLAN_ID for scalability.

Integration Points

The table interacts with other MSC tables:

  • MSC_SUPPLIES and MSC_DEMANDS for supply-demand matching.
  • MSC_ITEMS for aggregated item attributes across organizations.
  • MSC_PLAN_ORGANIZATIONS for org-level planning parameters.

Customization and Extensions

Common extensions include:

  • Adding custom columns via MSC_EXTENSION_TABLE_NAME tables.
  • Using Open Interfaces (MSC_ITEM_OPEN_INTERFACE) for bulk data loads.
  • Trigger-based validations during snapshot refreshes.

In summary, MSC_SYSTEM_ITEMS is foundational to Oracle ASCP's item master management, enabling cross-module synchronization and complex planning scenarios. Proper maintenance of this table is essential for accurate supply chain planning in Oracle EBS 12.1.1/12.2.2 environments.