How To Fix MD512 - Overflow: More than 99 phantom assemblies on level &1 of MatBOM for &2

SAP Error Message - Details

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 512

• Message text: Overflow: More than 99 phantom assemblies on level &1 of MatBOM for &2

What causes this issue?

The bill of material (BOM) for &V2& / &V3& / &V4& (material / plant /
usage / alternative) contains more than 99 phantom assemblies on at
least level &V1&.

System Response

The system cannot explode the BOM and processing is aborted.

How to fix this error?

To solve the problem, you should restructure the BOM in such a way so
that no more than 99 phantom assemblies exist on any one level.

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.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD512 - Overflow: More than 99 phantom assemblies on level &1 of MatBOM for &2 ?

  The SAP error message MD512 "Overflow: More than 99 phantom assemblies on level &1 of MatBOM for &2" typically occurs in the context of Material Requirements Planning (MRP) when the system encounters an issue with the Bill of Materials (BOM) structure. This error indicates that there are more than 99 phantom assemblies at a specific level of the BOM for a given material.
  Cause:
  
  Phantom Assemblies: In SAP, a phantom assembly is a type of assembly that is not physically stocked but is used in the BOM for planning purposes. If there are more than 99 phantom assemblies at a particular level in the BOM, the system cannot process this due to its limitations.
  BOM Structure: The structure of the BOM may be overly complex or incorrectly defined, leading to an excessive number of phantom assemblies.
  Configuration Issues: There may be configuration issues in the BOM settings or the way phantom assemblies are defined.
  
  Solution:
  
  Review the BOM: Check the BOM for the material in question. Look for any unnecessary phantom assemblies that can be removed or consolidated.
  Limit Phantom Assemblies: If possible, reduce the number of phantom assemblies to 99 or fewer at the specified level. This may involve restructuring the BOM or changing how components are defined.
  Use Alternative Structures: If the BOM is too complex, consider using alternative structures or simplifying the assembly process to avoid exceeding the limit.
  Consult Documentation: Refer to SAP documentation or help resources for guidance on managing BOMs and phantom assemblies.
  SAP Notes: Check for any relevant SAP Notes that may address this issue or provide patches or updates that could resolve the problem.
  
  Related Information:
  
  BOM Management: Understanding how to manage BOMs effectively in SAP is crucial. Familiarize yourself with the transaction codes related to BOM maintenance (e.g., CS01, CS02, CS03).
  Phantom Assemblies: Learn more about how phantom assemblies work in SAP and their intended use in planning and production.
  SAP Community: Engage with the SAP Community or forums for insights from other users who may have encountered similar issues.
  
  If the problem persists after attempting these solutions, it may be beneficial to consult with an SAP expert or your organization's SAP support team for further assistance.