How To Fix VMP_MSG344 - Load not possible; shop floor BOM contains phantom assembly

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 344

• Message text: Load not possible; shop floor BOM contains phantom assembly

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message VMP_MSG344 - Load not possible; shop floor BOM contains phantom assembly ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  VMP_MSG344: Load not possible; shop floor BOM contains phantom assembly
  
  Cause:
  This error occurs during the production order or process order scheduling or load planning when the system tries to create a load (capacity requirement) for a work center, but the shop floor BOM (Bill of Materials) contains a phantom assembly that is not allowed or cannot be processed in the current context.
  
  Phantom assembly: A phantom item is a non-stocked assembly used to simplify BOM structure. It is not produced or stocked but is exploded during planning.
  The system expects a BOM with real components or assemblies that can be scheduled and loaded onto work centers.
  If the BOM contains a phantom assembly that is not exploded or handled properly, the system cannot create a load for the work center because the phantom assembly does not correspond to an actual production step or capacity requirement.
  
  
  When does it occur?
  
  During capacity planning or scheduling of production/process orders.
  When the shop floor BOM is used for load creation and contains phantom assemblies.
  When the system tries to create capacity requirements for a work center but encounters a phantom assembly in the BOM.
  
  
  Solution:
  
  
  Check the BOM structure:
  
  Verify the BOM for the production or process order.
  Identify phantom assemblies in the BOM.
  
  
  
  Adjust BOM usage:
  
  If the phantom assembly is not supposed to be in the shop floor BOM, remove or replace it with the actual components or assemblies.
  Ensure that the BOM used for shop floor control does not contain phantom assemblies that cannot be processed.
  
  
  
  Explode phantom assemblies:
  
  Configure the system to explode phantom assemblies during planning so that the load is created for the actual components/work centers.
  This can be done by setting the phantom assembly indicator correctly and ensuring the planning/explosion logic handles it.
  
  
  
  Check routing and work center assignments:
  
  Make sure that the routing or process steps correspond to real assemblies/components.
  Phantom assemblies should not have their own routing steps or work centers assigned.
  
  
  
  Consult SAP Notes or documentation:
  
  Sometimes, specific SAP Notes address issues related to phantom assemblies in BOMs and load creation.
  Example SAP Note: 123456 (hypothetical) might provide patches or configuration advice.
  
  
  
  
  Related Information:
  
  
  Phantom Assemblies in SAP:
  
  Phantom assemblies are used to simplify BOMs by grouping components logically without creating a separate production step.
  They are exploded during planning to their components.
  Phantom assemblies are marked with a special indicator in the BOM item category (e.g., item category 'L' for phantom).
  
  
  
  Shop Floor BOM:
  
  A BOM variant used specifically for shop floor control and scheduling.
  Should reflect the actual production steps and components.
  
  
  
  Capacity Planning and Load Creation:
  
  Loads are created on work centers based on routing and BOM.
  Phantom assemblies do not correspond to actual work center loads.
  
  
  
  Transaction Codes:
  
  CS03 - Display BOM
  CO02 - Change Production Order
  MF50 - Planning Table (Capacity Planning)
  CM01 - Capacity Planning
  
  
  
  
  Summary:
  The error VMP_MSG344 indicates that the system cannot create a load because the shop floor BOM contains a phantom assembly that is not exploded or handled properly. The solution is to review and adjust the BOM to remove or correctly explode phantom assemblies so that the system can create capacity requirements for actual production steps.
  
  If you need help with specific steps or configuration, please provide more details about your BOM and production setup!