How To Fix LOP155 - Master data: Option list number &1 is not unique

LOP155 - Overview

• Message type: E = Error

• Message class: LOP - Logistical contract options

• Message number: 155

• Message text: Master data: Option list number &1 is not unique

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message LOP155 - Master data: Option list number &1 is not unique ?

  The SAP error message LOP155, which states "Master data: Option list number &1 is not unique," typically occurs in the context of SAP's Logistics Execution (LE) or Advanced Planning and Optimization (APO) modules. This error indicates that there is a problem with the uniqueness of an option list number in the master data.
  
  Cause:
  The error is caused by the presence of duplicate entries for the specified option list number in the master data. This can happen due to:
  
  Data Entry Errors: Duplicate entries may have been created inadvertently during data entry or data migration processes.
  
  Configuration Issues: Incorrect configuration settings in the system may lead to the generation of non-unique option list numbers.
  Master Data Inconsistencies: Inconsistencies in the master data can arise from improper data maintenance or updates.
  
  
  Solution:
  To resolve the LOP155 error, you can follow these steps:
  
  
  Identify Duplicates:
  
  Use transaction codes like SE16 or SE11 to access the relevant database tables (e.g., MARA, MARC,