How To Fix MMRP01239 - You cannot add components to phantom assemblies

MMRP01239 - Overview

• Message type: E = Error

• Message class: MMRP01 - Rapid Planning Matrix

• Message number: 239

• Message text: You cannot add components to phantom assemblies

What causes this issue?

In the planned order &V1&, you tried adding a new component to a phantom
assembly.

System Response

The system cannot change the order.

How to fix this error?

You can only add new components at the highest BOM level. You can only
make changes to the structure of a phantom assembly in the master data.
However, any changes to the master data only has an effect on newly
created or newly exploded planned orders.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

MMRP01239 - Details

• The SAP error message MMRP01239, which states "You cannot add components to phantom assemblies," typically occurs when you are trying to add components to a phantom assembly in the SAP system. Phantom assemblies are special types of assemblies that are not stocked as separate items but are used in the bill of materials (BOM) to simplify the structure of complex products.
  
  Cause:
  The error arises because:
  
  Phantom Assembly Definition: Phantom assemblies are defined in the system to act as placeholders in a BOM. They are not treated as independent stock items, and therefore, you cannot add components directly to them.
  BOM Structure: The structure of the BOM for a phantom assembly is designed to automatically include its components in the parent assembly's BOM, rather than allowing for direct component additions.
  
  
  Solution:
  To resolve this error, consider the following steps:
  
  
  Review BOM Structure: Check the BOM structure for the phantom assembly. Ensure that the components you want to