How To Fix LB801 - Batch number cannot be assigned

SAP Error Message - Details

• Message type: E = Error

• Message class: LB - Logistics: Batch - Management

• Message number: 801

• Message text: Batch number cannot be assigned

What causes this issue?

The system cannot assign a batch number to the specified material
number.

System Response

The system cannot find an entry for the material number specified in
the table BNMAT.

How to fix this error?

Check that the correct material number has been specified. Otherwise,
contact your system administrator.

Procedure for System Administrators

In table BNMAT, you have to maintain the assignment of material number
to number range object, sub-object, and number range.

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message LB801 - Batch number cannot be assigned ?

  The SAP error message LB801, which states "Batch number cannot be assigned," typically occurs in the context of batch management in SAP. This error can arise for several reasons, and understanding the cause is essential for finding a solution. Here are some common causes and their corresponding solutions:
  Causes of LB801 Error
  
  
  Batch Not Created: The batch number you are trying to assign may not exist in the system. This can happen if the batch has not been created or if it has been deleted.
  
  
  Batch Status: The batch may be in a status that does not allow it to be assigned. For example, if the batch is marked as "blocked" or "restricted," it cannot be used.
  
  
  Batch Management Settings: The material may not be set up for batch management, or the batch management settings may not be correctly configured for the specific plant or storage location.
  
  
  Batch Number Range: The batch number range may be exhausted or not properly defined in the system.
  
  
  Material Type: The material type may not support batch management, or the configuration for the material type may not allow for batch assignment.
  
  
  Plant/Storage Location Issues: The batch may not be valid for the specific plant or storage location you are trying to use.
  
  
  Solutions to LB801 Error
  
  
  Check Batch Existence: Verify that the batch number you are trying to assign exists in the system. You can do this by using transaction code MSC3N (Display Batch) to check the batch details.
  
  
  Review Batch Status: Check the status of the batch. If it is blocked or restricted, you may need to change its status or create a new batch.
  
  
  Batch Management Configuration: Ensure that the material is configured for batch management. You can check this in the material master record (transaction code MM03) under the "Purchasing" or "Plant Data/Storage" views.
  
  
  Batch Number Range: Check the batch number range settings in the system. You can do this by using transaction code OMN1 to review and adjust the number ranges if necessary.
  
  
  Material Type Configuration: Ensure that the material type supports batch management. You can check this in the configuration settings (transaction code SPRO) under the relevant material management settings.
  
  
  Plant/Storage Location Validation: Verify that the batch is valid for the specific plant and storage location. You can check this in the batch master data.
  
  
  Additional Information
  
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MM03 (Display Material), MSC3N (Display Batch), and OMN1 (Maintain Number Ranges) to help troubleshoot the issue.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to batch management and the LB801 error.
  
  
  User Authorizations: Ensure that you have the necessary authorizations to create or assign batches in the system.
  
  
  By following these steps, you should be able to identify the cause of the LB801 error and implement the appropriate solution. If the issue persists, consider reaching out to your SAP support team for further assistance.