How To Fix MILL_MM_OB027 - Higehst expansion level reached

SAP Error Message - Details

• Message type: E = Error

• Message class: MILL_MM_OB - Original Batch

• Message number: 027

• Message text: Higehst expansion level reached

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message MILL_MM_OB027 - Higehst expansion level reached ?

  The SAP error message MILL_MM_OB027 with the description "Highest expansion level reached" typically occurs in the context of Material Management (MM) or Production Planning (PP) when dealing with bill of materials (BOM) or similar hierarchical structures. This error indicates that the system has reached the maximum allowable depth of expansion for a BOM or similar structure.
  Cause:
  
  Hierarchical Depth: The error is primarily caused by the system attempting to expand a BOM or a similar structure that exceeds the predefined maximum depth. This can happen if there are too many levels of components or sub-components in the BOM.
  Configuration Settings: The maximum expansion level is defined in the system settings, and it may be set too low for the complexity of the BOM you are trying to process.
  Circular References: In some cases, circular references in the BOM can lead to excessive depth during expansion.
  
  Solution:
  
  Review BOM Structure: Check the BOM structure for excessive levels. If there are unnecessary levels, consider simplifying the BOM.
  Adjust Configuration Settings: If the BOM structure is valid and necessary, you may need to adjust the configuration settings in SAP to allow for a greater expansion level. This can typically be done in the configuration settings for the relevant module (MM or PP).
  
  You can check the settings in transaction code SPRO under the relevant area (e.g., Production -> Basic Data -> Material Master -> BOM -> Define BOM Usage).
  
  
  Check for Circular References: Ensure that there are no circular references in the BOM that could be causing the system to attempt to expand indefinitely.
  Use Alternative Methods: If the BOM is too complex, consider using alternative methods for processing or analyzing the BOM, such as breaking it down into smaller components or using different reporting tools.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CS03 (Display BOM) or CS02 (Change BOM) to review and modify BOMs.
  SAP Notes: Check SAP Notes for any specific patches or updates related to this error message. Sometimes, SAP releases notes that address specific issues or provide guidance on configuration.
  Documentation: Refer to SAP documentation for BOM management and configuration settings to understand the limits and best practices for structuring BOMs.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a technical consultant who can provide more in-depth analysis and assistance.