How To Fix LB804 - Batch number already exists

SAP Error Message - Details

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 804

• Message text: Batch number already exists

What causes this issue?

The batch number that would be created as a result of the production
order number or process order number used already exists. This may be
the case when two or more batches are created for a production order or
process order.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

In external (manual) assignment, choose another number.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LB804 - Batch number already exists ?

  The SAP error message LB804, which states "Batch number already exists," typically occurs when you are trying to create or assign a batch number in the system that is already in use or has been previously created. This error is common in inventory management and batch management scenarios within SAP.
  Cause:
  
  Duplicate Batch Number: The batch number you are trying to create or use already exists in the system for the same material.
  Batch Management Settings: The material may be set up for batch management, and the system is enforcing unique batch numbers.
  Incorrect Data Entry: There may be a typographical error in the batch number you are trying to enter.
  Batch Number Scope: The batch number might be restricted to a specific plant or storage location, and you are trying to use it in a different context.
  
  Solution:
  
  Check Existing Batches: Use transaction codes like MSC3N (Display Batch) or MMBE (Stock Overview) to check if the batch number already exists for the material in question.
  Use a Different Batch Number: If the batch number is indeed in use, consider using a different, unique batch number that complies with your organization's naming conventions.
  Review Batch Management Settings: Ensure that the material is correctly configured for batch management and that the batch number is valid for the specific plant and storage location.
  Data Entry Verification: Double-check the batch number you are entering for any typographical errors or formatting issues.
  Consult with Your SAP Administrator: If you are unsure about the batch management settings or need to create a new batch number, consult with your SAP administrator or a colleague familiar with batch management processes.
  
  Related Information:
  
  Batch Management in SAP: Understand how batch management works in SAP, including the configuration of batch numbers, batch determination, and how to manage batches in inventory.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  MSC1N (Create Batch)
  MSC2N (Change Batch)
  MSC3N (Display Batch)
  MMBE (Stock Overview)
  
  
  SAP Notes: Check SAP Notes for any specific patches or updates related to batch management and error messages.
  Documentation: Review SAP documentation or training materials related to batch management for best practices and troubleshooting tips.
  
  By following these steps, you should be able to resolve the LB804 error and manage batch numbers effectively in your SAP system.