How To Fix MILL_MM_OB026 - Lowest expansion level reached

SAP Error Message - Details

• Message type: E = Error

• Message class: MILL_MM_OB - Original Batch

• Message number: 026

• Message text: Lowest expansion level reached

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MILL_MM_OB026 - Lowest expansion level reached ?

  The SAP error message MILL_MM_OB026: "Lowest expansion level reached" typically occurs in the context of material requirements planning (MRP) or production planning processes. This error indicates that the system has reached the lowest level of a bill of materials (BOM) or a production order, and it cannot expand further to find additional components or materials needed for production.
  Causes:
  
  BOM Structure Issues: The BOM may not be correctly structured, or there may be missing components at the lowest level.
  Incorrect MRP Settings: MRP settings may not be configured correctly, leading to issues in how the system processes the BOM.
  Data Inconsistencies: There may be inconsistencies in the master data, such as material master records or BOM records.
  Circular References: There could be circular references in the BOM that prevent the system from processing it correctly.
  Missing Components: The components required for production may not be available or may not be defined in the BOM.
  
  Solutions:
  
  Check BOM Structure: Review the BOM structure to ensure that all components are correctly defined and that there are no missing items.
  Review MRP Settings: Ensure that MRP settings are configured correctly for the materials and production processes involved.
  Validate Master Data: Check the material master records and BOM records for any inconsistencies or missing information.
  Analyze Circular References: Look for any circular references in the BOM that could be causing the issue and resolve them.
  Run MRP Again: After making necessary corrections, run the MRP process again to see if the error persists.
  Consult Documentation: Refer to SAP documentation or help resources for specific guidance related to your version of SAP.
  
  Related Information:
  
  Transaction Codes: You may use transaction codes like CS03 (Display BOM), MD04 (Stock/Requirements List), and MD02 (MRP Run) to analyze and troubleshoot the issue.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Forums: Engage with SAP community forums or user groups for additional insights and solutions from other users who may have encountered similar issues.
  
  If the problem 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.