How To Fix VMP_MSG336 - Cannot modify quantity of manufacturing substitute

VMP_MSG336 - Overview

• Message type: E = Error

• Message class: VMP_MSG - VMP Message Manager

• Message number: 336

• Message text: Cannot modify quantity of manufacturing substitute

What causes this issue?

The component for which you want to edit the quantity has a
manufacturing substitute.

System Response

How to fix this error?

If you want to modify the quantity of a manufacturing substitute, use
<LS>Assign Manufacturing Substitute </>option in the <LS>Working</>
panel.

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

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_MSG336 - Cannot modify quantity of manufacturing substitute ?

  SAP Error Message:
  VMP_MSG336: Cannot modify quantity of manufacturing substitute
  
  
  Cause:
  This error occurs when you try to change the quantity of a manufacturing substitute in a production order or process order, but the system does not allow it. Manufacturing substitutes are alternative materials or components defined in the bill of materials (BOM) that can replace the original component during production.
  The system restricts quantity changes for manufacturing substitutes because:
  
  The substitute is managed as a fixed alternative with predefined quantities.
  Quantity changes are only allowed for the original component, not for the substitute.
  The substitute might be controlled by specific configuration or master data settings that prevent quantity modification.
  The production order or process order status or settings may restrict changes to substitute quantities.
  
  
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Check BOM and Substitute Settings:
  
  Verify the BOM for the production order.
  Confirm that the substitute is correctly defined as a manufacturing substitute.
  Understand that the quantity of the substitute