How To Fix LF312 - Wrong screen number

SAP Error Message - Details

• Message type: E = Error

• Message class: LF - Mobile Computing in Warehouse Logistics

• Message number: 312

• Message text: Wrong screen number

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 LF312 - Wrong screen number ?

  The SAP error message LF312 "Wrong screen number" typically occurs in the context of SAP's Logistics Execution (LE) module, particularly when dealing with delivery processing or warehouse management. This error indicates that the system is trying to access a screen or transaction that is not valid or does not exist in the current context.
  Causes:
  
  Incorrect Screen Number: The screen number being called is not valid for the transaction or process being executed.
  Custom Development Issues: If there are custom programs or enhancements, they may be calling an incorrect screen number.
  Configuration Issues: The configuration settings for the relevant module may not be set up correctly, leading to the system trying to access a non-existent screen.
  User Authorizations: The user may not have the necessary authorizations to access certain screens, leading to this error.
  System Bugs: Occasionally, this error can be caused by bugs in the SAP system or specific patches that have not been applied.
  
  Solutions:
  
  Check Screen Number: Verify the screen number being called in the transaction. Ensure that it is correct and exists in the system.
  Review Custom Code: If there are custom developments, review the code to ensure that it is correctly referencing valid screen numbers.
  Configuration Review: Check the configuration settings in the relevant module (e.g., delivery processing, warehouse management) to ensure they are set up correctly.
  User Authorizations: Ensure that the user has the necessary authorizations to access the screens involved in the transaction.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes or patches that may address this issue. Applying the latest patches can sometimes resolve unexpected errors.
  Debugging: If you have access to debugging tools, you can debug the transaction to see where the error is being triggered and gather more information about the context.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with the transaction codes related to the process you are working on (e.g., VL01N for creating deliveries).
  SAP Documentation: Refer to SAP's official documentation for the Logistics Execution module for more details on screen numbers and their usage.
  Community Forums: Check SAP community forums or other user groups for similar issues and solutions shared by other users.
  
  If the problem persists after trying the above solutions, it may be beneficial to contact your SAP support team or consult with an SAP expert for further assistance.