How To Fix /VSO/M_MSG431 - Unknown LB category info delivery <%1> item:<%2> LB category:<%3>

SAP Error Message - Details

• Message type: E = Error

• Message class: /VSO/M_MSG -

• Message number: 431

• Message text: Unknown LB category info delivery <%1> item:<%2> LB category:<%3>

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message /VSO/M_MSG431 - Unknown LB category info delivery <%1> item:<%2> LB category:<%3> ?

  The SAP error message /VSO/M_MSG431 Unknown LB category info delivery <%1> item:<%2> LB category:<%3> typically indicates that there is an issue related to the handling of logistics or delivery information in the SAP system, specifically concerning the LB (Logistics Batch) category.
  Cause:
  
  
  Unknown LB Category: The error suggests that the system encountered a logistics batch category that it does not recognize. This could be due to:
  
  The LB category not being defined in the system.
  A typo or incorrect entry in the delivery or item data.
  A missing configuration or master data related to the LB category.
  
  
  
  Data Inconsistency: There may be inconsistencies in the master data or configuration settings that lead to the system not being able to find the specified LB category.
  
  
  Custom Development: If there are custom developments or enhancements in the system, they might not be handling certain LB categories correctly.
  
  
  Solution:
  
  
  Check LB Category Configuration:
  
  Go to the configuration settings for logistics batch management in SAP and verify that the LB category in question is defined correctly.
  Ensure that the LB category is active and properly configured.
  
  
  
  Verify Master Data:
  
  Check the master data for the delivery and item mentioned in the error message. Ensure that the LB category is correctly assigned to the relevant materials or batches.
  
  
  
  Review Input Data:
  
  Look at the input data for the delivery and item. Ensure that there are no typos or incorrect values being passed that could lead to the system not recognizing the LB category.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for more information on logistics batch management and LB categories.
  
  
  
  Debugging:
  
  If you have access to the development environment, consider debugging the process to see where the error is being triggered and what data is being passed at that point.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance. Provide them with the error message details and any relevant context.
  
  
  
  Related Information:
  
  Transaction Codes: You may want to check relevant transaction codes such as MM03 (Display Material), VL03N (Display Outbound Delivery), or MB52 (List Warehouse Stocks on Hand) to investigate the materials and their associated LB categories.
  Batch Management: Familiarize yourself with batch management concepts in SAP, as understanding how batches and LB categories work can help in troubleshooting.
  SAP Notes: Search for relevant SAP Notes that might address known issues or provide patches related to this error message.
  
  By following these steps, you should be able to identify and resolve the issue related to the unknown LB category in your SAP system.