How To Fix MMRP01242 - Components of a phantom assembly: only quantity changes possible

MMRP01242 - Overview

• Message type: E = Error

• Message class: MMRP01 - Rapid Planning Matrix

• Message number: 242

• Message text: Components of a phantom assembly: only quantity changes possible

What causes this issue?

For a component of a phantom assembly, you tried to change a different
attribute other than the quantity. However, for components of phantom
assemblies you can only change the quantity.

System Response

The system cannot change the planned order.

How to fix this error?

If you want to change the material or the component variant for a
component of a phantom assembly, you can only do so by changing the
master data (product structure of the phantom assembly). Such a change,
however, only has any effect if you create new planned orders or if you
reexplode existing planned orders with the planning matrix.

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.

MMRP01242 - Details

• The SAP error message MMRP01242 indicates that you are trying to perform an operation on a phantom assembly that is not allowed. Phantom assemblies are used in SAP to simplify the bill of materials (BOM) for production processes. They are treated as a single entity in planning and production, but they do not exist as physical items in inventory.
  
  Cause:
  The error occurs when you attempt to perform an operation (such as changing the quantity or making other modifications) on a phantom assembly that is not permitted. This typically happens in the following scenarios:
  
  Modification Restrictions: You may be trying to change the structure of the phantom assembly (e.g., adding or removing components) instead of just adjusting the quantity.
  System Configuration: The system is configured to allow only certain types of changes to phantom assemblies, primarily quantity adjustments.
  Incorrect Transaction: You might be using a transaction that is not suitable for modifying phantom assemblies.
  
  
  Solution:
  To resolve