How To Fix VMP_MSG341 - Cannot move phantom assembly to shop floor BOM

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 341

• Message text: Cannot move phantom assembly to shop floor BOM

Self-Explanatory Message

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• What is the cause and solution for SAP error message VMP_MSG341 - Cannot move phantom assembly to shop floor BOM ?

  SAP Error Message:
  
  VMP_MSG341: Cannot move phantom assembly to shop floor BOM
  
  Cause:
  This error occurs when you try to include or move a phantom assembly (a special type of BOM item that is not a physical assembly but a logical grouping of components) directly into a shop floor BOM (a BOM used for production execution on the shop floor). 
  In SAP, phantom assemblies are typically used in planning BOMs to simplify the structure by grouping components logically without creating a physical assembly. However, shop floor BOMs require actual physical assemblies or components that can be produced or issued on the shop floor. Therefore, phantom assemblies are not allowed in shop floor BOMs.
  
  Explanation:
  
  Phantom Assembly: A non-stocked, non-physical assembly used mainly for planning purposes.
  Shop Floor BOM: BOM used in production orders and shop floor control, representing actual physical assemblies/components.
  
  Since phantom assemblies do not represent physical entities, SAP restricts their use in shop floor BOMs to avoid confusion and errors in production execution.
  
  Solution:
  
  
  Remove the Phantom Assembly from the Shop Floor BOM:
  
  Instead of including the phantom assembly, explode it into its individual components and include those components directly in the shop floor BOM.
  
  
  
  Use Planning BOM for Phantom Assemblies:
  
  Keep phantom assemblies in planning BOMs (e.g., for MRP or cost estimation) but do not transfer them to shop floor BOMs.
  
  
  
  Check BOM Usage:
  
  Verify the BOM usage type. Phantom assemblies should be used in BOM usage types intended for planning (e.g., usage 1 or 2), not for shop floor (usage 3 or 4).
  
  
  
  Adjust BOM Structure:
  
  If the phantom assembly is necessary for planning, maintain it in the planning BOM and create a separate shop floor BOM with only physical components.
  
  
  
  
  Related Information:
  
  
  Phantom Assemblies in SAP:
  
  Phantom assemblies are defined in the BOM with item category N (phantom item). They are exploded during planning but do not exist as stock items.
  
  
  BOM Usage Types:  
  
  Usage 1: Production  
  Usage 2: Engineering  
  Usage 3: Shop Floor  
  Usage 4: Costing
  
  Phantom assemblies are generally used in usage 1 or 2, not in usage 3.
  
  
  
  SAP Notes and Documentation:  
  
  SAP Help Portal on BOMs and phantom assemblies  
  SAP Notes related to BOM item categories and shop floor BOM restrictions
  
  
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Phantom assemblies cannot be included in shop floor BOMs because they are non-physical.
  
  
  Solution
  Remove phantom assemblies from shop floor BOMs; include their components instead.
  
  
  Additional Info
  Use phantom assemblies only in planning BOMs; shop floor BOMs require physical items.
  
  
  
  
  If you need further assistance, please provide details about the transaction or process where the error occurs (e.g., BOM maintenance, production order creation), and I can help with more specific steps.