How To Fix LOP018 - External reference can be set to new option lists only. Key &1

SAP Error Message - Details

• Message type: E = Error

• Message class: LOP - Logistical contract options

• Message number: 018

• Message text: External reference can be set to new option lists only. Key &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message LOP018 - External reference can be set to new option lists only. Key &1 ?

  The SAP error message LOP018 indicates that an external reference can only be set for new option lists. This typically occurs in the context of SAP's Logistics or Material Management modules, particularly when dealing with option lists for configurable materials or variants.
  Cause:
  The error arises when you attempt to assign an external reference to an existing option list that is not allowed. This can happen if:
  
  You are trying to modify an existing option list instead of creating a new one.
  The system is configured to only allow external references for new option lists.
  There may be inconsistencies in the data or configuration settings related to the option lists.
  
  Solution:
  To resolve the LOP018 error, you can take the following steps:
  
  
  Create a New Option List: Instead of trying to modify an existing option list, create a new one. Ensure that you are following the correct procedure for creating option lists in your SAP system.
  
  
  Check Configuration Settings: Review the configuration settings related to option lists and external references. Ensure that the system is set up to allow external references for the types of option lists you are working with.
  
  
  Data Consistency: Verify that the data you are working with is consistent and does not have any issues that could lead to this error. Check for any missing or incorrect entries in the relevant tables.
  
  
  Consult Documentation: Refer to SAP documentation or help resources for specific guidelines on managing option lists and external references. This can provide insights into best practices and any system-specific requirements.
  
  
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP support for assistance. They can provide more detailed troubleshooting based on your specific system configuration and version.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that deal with option lists and configurable materials, such as CU50 (Configuration Profile) or CU01 (Create Configuration Profile).
  SAP Notes: Check for any SAP Notes related to LOP018 or option lists that may provide additional context or solutions.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to address the LOP018 error effectively.