How To Fix VMP_MSG291 - Quantity change of conflicted item(replaced material) is not possible

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 291

• Message text: Quantity change of conflicted item(replaced material) is not possible

Self-Explanatory Message

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• What is the cause and solution for SAP error message VMP_MSG291 - Quantity change of conflicted item(replaced material) is not possible ?

  Certainly! Here's a detailed explanation regarding the SAP error message VMP_MSG291: "Quantity change of conflicted item (replaced material) is not possible":
  
  Error Message:
  VMP_MSG291: Quantity change of conflicted item (replaced material) is not possible
  
  Cause:
  This error occurs in the Variant Configuration (LO-VC) or Variant Management Process when you try to change the quantity of an item that has been replaced due to a conflict resolution in the configuration process.
  
  In SAP Variant Configuration, when a conflict arises between characteristics or dependencies, the system may replace one material with another (a "replaced material") to resolve the conflict.
  Once the system has replaced the original item with a conflicting item, the quantity of this replaced item becomes fixed and cannot be changed manually.
  Attempting to change the quantity of such a replaced/conflicted item triggers this error.
  
  
  When does it typically occur?
  
  During sales order processing or production order creation involving configurable materials.
  When the system automatically replaces a material due to configuration conflicts.
  When a user tries to manually adjust the quantity of the replaced item in the sales order or BOM.
  
  
  Solution:
  
  
  Do not manually change the quantity of replaced/conflicted items:
  
  The quantity of replaced items is controlled by the system based on configuration logic and conflict resolution.
  Instead of changing the quantity of the replaced item, adjust the quantity of the original configurable item or resolve the configuration conflict.
  
  
  
  Review and resolve configuration conflicts:
  
  Check the configuration profile and dependencies to identify why the conflict occurred.
  Adjust the characteristics, dependencies, or variant rules to avoid conflicts that cause replacements.
  
  
  
  Use the configuration screen to make changes:
  
  Make quantity changes at the configurable material level, not at the replaced item level.
  Use the configuration dialog or variant configuration transaction (e.g., CU50, CU51) to adjust characteristics and quantities properly.
  
  
  
  Check for OSS Notes or SAP Support:
  
  Sometimes, specific SAP Notes address issues related to variant configuration and conflict handling.
  Search SAP Support Portal for notes related to VMP_MSG291 or variant configuration conflicts.
  
  
  
  
  Related Information:
  
  Variant Configuration (LO-VC): This module handles configurable products where characteristics and dependencies define product variants.
  Conflict Resolution: SAP automatically resolves conflicts between characteristics or dependencies by replacing materials or adjusting configurations.
  Material Replacement: When conflicts occur, the system replaces the conflicting material with an alternative to maintain valid configuration.
  Transactions: CU50 (Configuration Profile), CU51 (Dependency Maintenance), VA01/VA02 (Sales Order), CO01/CO02 (Production Order).
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Attempt to change quantity of a replaced/conflicted item in variant configuration.
  
  
  Effect
  System throws error VMP_MSG291 and prevents quantity change.
  
  
  Solution
  Adjust quantity at configurable material level, resolve conflicts, do not change replaced item quantity manually.
  
  
  Related Areas
  Variant Configuration, Conflict Resolution, Material Replacement, Sales/Production Orders.
  
  
  
  
  If you need help with specific configuration or conflict resolution steps, please provide details about your configuration scenario or the transaction where the error occurs.