How To Fix L1287 - Only N or O or B allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: L1 - Message handling for WM master data

• Message number: 287

• Message text: Only N or O or B allowed

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 L1287 - Only N or O or B allowed ?

  The SAP error message L1287: Only N or O or B allowed typically occurs in the context of inventory management or logistics when a user is trying to enter a value that is not acceptable for a specific field. This error is often related to the handling of stock types or movement types in SAP.
  Cause:
  The error message indicates that the system expects a specific input for a field, and the input provided does not match the allowed values. The allowed values are:
  
  N: Stock type "Unrestricted"
  O: Stock type "Quality Inspection"
  B: Stock type "Blocked"
  
  This error can occur in various scenarios, such as:
  
  When trying to post a goods movement and the stock type is incorrectly specified.
  When entering data in a transaction that requires a specific stock type but receives an invalid input.
  
  Solution:
  To resolve the error, you should:
  
  Check the Input: Ensure that the value you are entering in the relevant field is one of the allowed values (N, O, or B).
  Review Configuration: If you are using a custom transaction or program, check the configuration to ensure that it is set up to accept only the specified values.
  Consult Documentation: Refer to the SAP documentation or help files related to the specific transaction you are using to understand the expected input.
  User Training: If this error is occurring frequently, consider providing training to users on the correct values to enter in the relevant fields.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes related to inventory management, such as MIGO (Goods Movement), MB1A (Goods Withdrawal), or MB1B (Transfer Posting).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  Debugging: If you have access to debugging tools, you can trace the program execution to see where the invalid input is being generated.
  
  If the issue persists after checking the above points, it may be beneficial to consult with your SAP support team or a functional consultant who specializes in inventory management.