How To Fix EHPRC_RCS158 - Real substance is already assigned to material &1

SAP Error Message - Details

• Message type: E = Error

• Message class: EHPRC_RCS - REACH Compliance Messages

• Message number: 158

• Message text: Real substance is already assigned to material &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message EHPRC_RCS158 - Real substance is already assigned to material &1 ?

  The SAP error message EHPRC_RCS158 indicates that a real substance is already assigned to the specified material (denoted by &1). This error typically arises in the context of SAP's Environment, Health, and Safety (EHS) module, particularly when dealing with substance management and material data.
  Cause:
  
  Duplicate Assignment: The error occurs when there is an attempt to assign a real substance to a material that already has that substance assigned. This can happen during the creation or modification of material data.
  Data Integrity Rules: SAP enforces data integrity rules to prevent multiple assignments of the same substance to a single material, which could lead to inconsistencies in data reporting and compliance.
  
  Solution:
  
  
  Check Existing Assignments: 
  
  Navigate to the material in question and check the existing assignments of real substances. You can do this through the material master data transaction (e.g., MM03).
  Look for the "Substances" tab or section to see which substances are already assigned.
  
  
  
  Remove or Modify Assignment:
  
  If the substance needs to be changed or removed, you can do so by editing the material master data. Use transaction codes like MM02 to modify the material and remove the existing substance assignment if necessary.
  If you need to assign a different substance, ensure that the new substance is not already assigned to the material.
  
  
  
  Consult Documentation: 
  
  Review SAP documentation or help files related to substance management for additional guidance on managing real substances and materials.
  
  
  
  Check for Customizations: 
  
  If your organization has custom developments or enhancements in the EHS module, consult with your SAP technical team to ensure that there are no custom rules or validations causing this error.
  
  
  
  Contact SAP Support: 
  
  If the issue persists and you cannot resolve it through the above steps, consider reaching out to SAP support for further assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM01 (Create Material), MM02 (Change Material), and MM03 (Display Material).
  EHS Module: Understanding the functionalities of the EHS module can help in managing substances and materials effectively.
  Data Consistency: Maintaining data consistency in material and substance assignments is crucial for compliance with regulatory requirements and internal policies.
  
  By following these steps, you should be able to resolve the error EHPRC_RCS158 and manage your material and substance assignments effectively.