Search Results mtl_item_revisions_b




The MTL_ITEM_REVISIONS_B table is a fundamental data structure within Oracle E-Business Suite (EBS) 12.1.1 and 12.2.2, serving as the primary repository for item revision information in the Inventory and Product Lifecycle Management modules. This table stores critical metadata about item revisions, enabling organizations to track changes, maintain version control, and ensure accurate material management throughout the product lifecycle. Below is a detailed technical summary of its structure, functionality, and integration within Oracle EBS.

Table Structure and Key Columns

The MTL_ITEM_REVISIONS_B table is part of the Oracle Inventory module's data model and contains the following key columns:
  • INVENTORY_ITEM_ID: Foreign key linking to MTL_SYSTEM_ITEMS_B, identifying the item.
  • ORGANIZATION_ID: Specifies the inventory organization where the revision is applicable.
  • REVISION: The alphanumeric revision identifier (e.g., "A", "B", "1.0").
  • EFFECTIVITY_DATE: The date from which the revision becomes active.
  • IMPLEMENTATION_DATE: Optional field for tracking when the revision was implemented.
  • DESCRIPTION: Free-text field for revision notes or comments.
  • ATTRIBUTE_CATEGORY and ATTRIBUTE1-15: Flexfields for custom attributes.
  • CREATION_DATE, CREATED_BY, LAST_UPDATE_DATE, LAST_UPDATED_BY: Standard Oracle audit columns.

Functional Role in Oracle EBS

The table supports:
  1. Revision Control: Tracks iterative changes to items (e.g., engineering changes, design updates).
  2. BOM and Routing Management: Revisions are referenced in BOM_BILL_OF_MATERIALS and BOM_OPERATIONAL_ROUTINGS to maintain accurate manufacturing definitions.
  3. Work in Process (WIP): Ensures correct item versions are used in production.
  4. Costing: Revision-specific costs can be maintained in CST_ITEM_COSTS.

Integration Points

The table interacts with:
  • MTL_SYSTEM_ITEMS_B: Base item definitions.
  • BOM_BILL_OF_MATERIALS: Revision-specific bill of materials.
  • WIP_DISCRETE_JOBS: Tracks revisions used in manufacturing.
  • PO_REQUISITION_LINES and PO_LINES_ALL: Procurement integration.

Technical Considerations

  • Indexes: Primary key on (INVENTORY_ITEM_ID, ORGANIZATION_ID, REVISION) with additional indexes on EFFECTIVITY_DATE for performance.
  • APIs: The INV_ITEM_REVISION_PUB package provides programmatic access.
  • Data Security: Access controlled via Oracle's Function Security and MOAC (Multi-Org Access Control).
  • Purging: Requires custom scripts; revisions are often retained for compliance.

Customization and Extensions

Organizations frequently extend functionality via:
  • Custom triggers for revision approval workflows.
  • Extensions using descriptive flexfields (DFFs).
  • Integration with PLM systems via Oracle Integration Bus.

Conclusion

The MTL_ITEM_REVISIONS_B table is a cornerstone of item revision management in Oracle EBS, providing traceability and control essential for manufacturing, engineering, and supply chain processes. Its design reflects Oracle's modular architecture, enabling seamless integration across inventory, BOM, and production modules while supporting extensibility for industry-specific requirements.