How To Fix PPH_MRP403 - Low-level code &1 started at &2 &3

SAP Error Message - Details

• Message type: E = Error

• Message class: PPH_MRP -

• Message number: 403

• Message text: Low-level code &1 started at &2 &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message PPH_MRP403 - Low-level code &1 started at &2 &3 ?

  The SAP error message PPH_MRP403, which indicates a "Low-level code &1 started at &2 &3," typically relates to issues in the Material Requirements Planning (MRP) process. This error is associated with the low-level code (LLC) of materials in the MRP run, which is used to determine the sequence in which materials are planned based on their dependencies.
  Cause:
  
  Low-Level Code Configuration: The low-level code for a material may not be set correctly. This can happen if the material is not properly structured in the bill of materials (BOM) or if there are inconsistencies in the material master data.
  BOM Structure Issues: If the BOM structure is not correctly defined, it can lead to incorrect low-level coding, causing the MRP run to fail.
  Material Dependencies: The error may arise from circular dependencies or incorrect relationships between materials in the BOM.
  MRP Settings: Incorrect MRP settings or parameters can also lead to this error.
  
  Solution:
  
  Check Low-Level Code: Verify the low-level code for the affected materials. You can do this by checking the material master data in transaction MM03 or using the relevant reports.
  Review BOM Structure: Ensure that the BOM for the material is correctly defined. Check for any missing components or incorrect configurations.
  Analyze Dependencies: Look for any circular dependencies or incorrect relationships in the BOM that could be causing the issue.
  MRP Configuration: Review the MRP settings in the configuration to ensure they are set up correctly. This includes checking the planning parameters and strategies.
  Re-run MRP: After making the necessary corrections, re-run the MRP process to see if the error persists.
  
  Related Information:
  
  Transaction Codes: Use transaction codes like MM03 (Display Material), CS03 (Display BOM), and MD02 (Single-item, single-level MRP) to analyze and correct the issues.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Refer to SAP documentation on MRP and low-level coding for a deeper understanding of how these elements interact within the system.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP support team or reach out to SAP support for further assistance.