How To Fix VMP_MSG381 - BOM item &1 should be within the assembly of &2.

SAP Error Message - Details

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 381

• Message text: BOM item &1 should be within the assembly of &2.

What causes this issue?

When an assembly from the source is moved to target, you must also plan
all the components with the assembly. You can create intermediate
structures or remove existing subassemblies, but the hierarchical
integrity of the assembly should be maintained.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

The system displays an error message when it finds the hierarchical
structure in the source not matching with the hierarchical structure in
the target.

How to fix this error?

You must correct the structure by rearranging the hierarchical structure
in the target.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VMP_MSG381 - BOM item &1 should be within the assembly of &2. ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  VMP_MSG381: BOM item &1 should be within the assembly of &2.
  
  Cause:
  This error occurs when a Bill of Materials (BOM) item is assigned or referenced incorrectly outside the scope of its parent assembly. Specifically, the system expects the BOM item (&1) to belong to or be part of the assembly (&2), but it is found to be outside or not properly linked.
  In other words, the BOM item you are trying to use or process is not valid for the specified assembly because it is not included in the BOM structure of that assembly.
  
  When does it occur?
  
  During production order creation or processing.
  When trying to assign or confirm components in a production order.
  When modifying BOMs or routing where component assignments are checked.
  When using process orders or repetitive manufacturing where BOM consistency is validated.
  
  
  Solution:
  
  
  Check BOM Structure:
  
  Verify that the BOM item (&1) is indeed part of the BOM for the assembly (&2).
  Use transaction CS03 (Display BOM) or CS02 (Change BOM) to check the BOM components for the assembly.
  
  
  
  Correct BOM Assignment:
  
  If the BOM item is missing from the assembly BOM, add it properly.
  If the BOM item is incorrectly assigned to another assembly, correct the assignment.
  
  
  
  Check Production Order Components:
  
  If the error occurs during production order processing, check the components assigned to the order.
  Use transaction CO02 (Change Production Order) to verify components.
  Ensure that the components correspond to the BOM of the assembly being produced.
  
  
  
  Check Material Master and BOM Validity:
  
  Ensure that the BOM is valid for the plant and date of production.
  Check if any BOM status or validity period is causing the component to be invalid.
  
  
  
  Recreate or Update BOM:
  
  If BOM inconsistencies exist, recreate or update the BOM to reflect the correct structure.
  
  
  
  
  Related Information:
  
  
  Transaction Codes:
  
  CS01 - Create BOM
  CS02 - Change BOM
  CS03 - Display BOM
  CO01 - Create Production Order
  CO02 - Change Production Order
  
  
  
  SAP Notes:
  
  Check SAP Notes related to BOM inconsistencies or production order errors if the problem persists.
  
  
  
  Configuration:
  
  BOM usage and validity settings in the material master and BOM configuration can affect component assignment.
  
  
  
  
  Summary:
  The error VMP_MSG381 indicates a mismatch between the BOM item and the assembly it is supposed to belong to. The solution involves verifying and correcting the BOM structure so that the component is properly included in the assembly's BOM.
  
  If you provide the exact context or transaction where this error occurs, I can help with more specific troubleshooting steps.