How To Fix W5021 - Choose a line

SAP Error Message - Details

• Message type: E = Error

• Message class: W5 - Messages for MM-WEB Applications and BAPIs

• Message number: 021

• Message text: Choose a line

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W5021 - Choose a line ?

  SAP Error Message:
  
  W5021 - Choose a line
  
  Cause:
  The warning message W5021 "Choose a line" typically appears in SAP when a user is expected to select a line item from a list or table but has not done so. This often occurs in transaction screens or selection dialogs where the system requires the user to explicitly select one or more entries before proceeding with an action (e.g., editing, deleting, or processing a line item).
  
  When does it occur?
  
  When a user tries to execute an action that requires a line selection but no line is selected.
  Common in list processing screens, ALV grids, or selection dialogs.
  It is a prompt to ensure the user explicitly chooses the relevant data row(s).
  
  
  Solution:
  
  Select a line: Simply click on the desired line in the list or table before proceeding.
  Check selection criteria: Make sure the correct line(s) are highlighted or marked.
  If the screen uses checkboxes or radio buttons for selection, ensure one is checked.
  If the issue persists, verify if the UI element is working properly or if there is a screen layout issue.
  In custom developments, ensure that the code checks for line selection and handles the case when no line is selected by prompting this message.
  
  
  Related Information:
  
  This is a warning message (W), not an error, so it does not stop processing but advises the user to take an action.
  Message class: Usually related to the application area where the list is displayed (e.g., MM, SD, FI).
  In ABAP, this message can be triggered by statements like MESSAGE W5021 WITH 'Choose a line'.
  If you are a developer, you can check the message class and number in transaction SE91.
  If this message appears unexpectedly, check for UI or authorization issues that might prevent line selection.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Message
  W5021 - Choose a line
  
  
  Type
  Warning
  
  
  Cause
  No line selected when required
  
  
  Solution
  Select a line before proceeding
  
  
  Context
  List or table processing screens
  
  
  
  
  If you provide the transaction or context where this message appears, I can give more specific guidance.