How To Fix LOP034 - Only one list item is allowed for option category &1. Key &2

SAP Error Message - Details

• Message type: E = Error

• Message class: LOP - Logistical contract options

• Message number: 034

• Message text: Only one list item is allowed for option category &1. Key &2

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 LOP034 - Only one list item is allowed for option category &1. Key &2 ?

  The SAP error message LOP034 indicates that there is an issue with the configuration of option categories in the SAP system, specifically in the context of variant configuration or product configuration. This error typically arises when the system expects only one list item for a specific option category, but multiple items are provided or configured.
  Cause:
  
  Multiple Entries: The error occurs when there are multiple entries for an option category that is supposed to have only one entry. This can happen if the configuration of the product or variant is incorrect.
  Incorrect Configuration: The configuration settings for the product or variant may not align with the expected settings defined in the system.
  Data Integrity Issues: There may be inconsistencies or errors in the master data related to the product configuration.
  
  Solution:
  
  Check Configuration: Review the configuration of the product or variant in question. Ensure that only one entry exists for the specified option category.
  Adjust Option Categories: If multiple entries are found, determine which entry is correct and remove or deactivate the others.
  Review Master Data: Check the master data for the product to ensure that it is correctly set up according to the requirements of the option category.
  Consult Documentation: Refer to SAP documentation or configuration guides related to variant configuration to ensure that the setup aligns with best practices.
  Testing: After making changes, test the configuration to ensure that the error no longer occurs and that the product behaves as expected.
  
  Related Information:
  
  Transaction Codes: You may need to use transaction codes such as CU50 (Configuration Profile) or CU01 (Create Configuration Profile) to review and adjust the configuration settings.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on configuration issues.
  Support: If the issue persists after troubleshooting, consider reaching out to SAP support or consulting with a functional consultant who specializes in variant configuration.
  
  By following these steps, you should be able to resolve the LOP034 error and ensure that your product configuration is set up correctly.