How To Fix VMP_MSG338 - BOM is already loaded.

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 338

• Message text: BOM is already loaded.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message VMP_MSG338 - BOM is already loaded. ?

  Certainly! Here's a detailed explanation for the SAP error message VMP_MSG338: "BOM is already loaded."
  
  Error Message
  VMP_MSG338: BOM is already loaded.
  
  Cause
  This error occurs when you try to load a Bill of Materials (BOM) into the SAP Variant Configuration (LOVC - List of Values for Characteristics) or into the Variant Configuration model, but the system detects that the BOM is already loaded in the current session or context.
  In other words, the system prevents reloading the same BOM multiple times to avoid redundancy or conflicts during configuration or processing.
  
  When does it typically occur?
  
  When using transaction CU50 (Configuration Profile) or CU51 (Configuration Profile with BOM).
  During variant configuration when the BOM is being read or loaded multiple times.
  When a user or program tries to load the same BOM again without clearing or resetting the previous load.
  In custom developments or user exits where BOM loading is triggered programmatically.
  
  
  Solution / How to resolve
  
  
  Check if BOM is already loaded:
  
  Before attempting to load the BOM again, verify if it is already loaded in the current session or context.
  Avoid redundant BOM loading calls in custom code or user exits.
  
  
  
  Clear or reset BOM load:
  
  If you need to reload the BOM, first clear the existing BOM load or reset the configuration session.
  Use appropriate SAP transactions or program logic to reset the BOM load status.
  
  
  
  Review custom code or user exits:
  
  If this error occurs in a custom program or enhancement, check the logic that loads the BOM.
  Ensure that the BOM loading is done only once per session or per configuration cycle.
  
  
  
  Use standard SAP transactions properly:
  
  When working with variant configuration, use standard transactions like CU50, CU51, CU41, etc., as intended.
  Avoid manual or repeated BOM loading unless necessary.
  
  
  
  Debugging:
  
  If unsure why the BOM is considered already loaded, debug the program or transaction to see where the BOM load flag or status is set.
  Check the internal tables or memory areas where BOM load status is stored.
  
  
  
  
  Related Information
  
  
  Variant Configuration (LOVC) and BOM:
  
  BOMs are essential in variant configuration to define components and their variants.
  SAP loads BOMs to determine possible component variants during configuration.
  
  
  
  Transactions:
  
  CU50 - Configuration Profile
  CU51 - Configuration Profile with BOM
  CS03 - Display BOM
  CS02 - Change BOM
  
  
  
  SAP Notes:
  
  Check SAP Notes related to variant configuration and BOM loading for any known issues or patches.
  
  
  
  SAP Help Portal:
  
  Variant Configuration documentation for understanding BOM loading and configuration profiles.
  
  
  
  
  Summary
  
  
  
  Aspect
  Description
  
  
  
  
  Cause
  Attempt to load a BOM that is already loaded in the current session or context.
  
  
  Solution
  Avoid redundant BOM loading; clear/reset BOM load before reloading; check custom code for repeated BOM load calls.
  
  
  Related
  Variant Configuration transactions (CU50, CU51), BOM maintenance (CS02, CS03), SAP Notes on variant configuration.
  
  
  
  
  If you provide more context (e.g., transaction used, custom code involved), I can help with more specific guidance.