How To Fix W_DSD_01059 - You need to start a selection before you can switch to "Change mode"

SAP Error Message - Details

• Message type: E = Error

• Message class: W_DSD_01 - Global message class for DSD

• Message number: 059

• Message text: You need to start a selection before you can switch to "Change mode"

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message W_DSD_01059 - You need to start a selection before you can switch to "Change mode" ?

  SAP Error Message:
  
  W_DSD_01059: You need to start a selection before you can switch to "Change mode"
  
  Cause:
  This warning message typically occurs in SAP when you try to switch to Change mode in a transaction or report (often in Data Selection or Data Display screens) without first executing a selection or starting a data retrieval process.
  In other words, the system expects you to perform a selection (e.g., enter selection criteria and execute the report or data fetch) before allowing you to switch to change or edit mode. If you try to switch modes prematurely, SAP raises this warning.
  
  When does it occur?
  
  In transactions or reports where you have to first select data (e.g., via selection screen or filter criteria).
  Before the system has any data loaded or selected.
  When trying to switch from display mode to change mode without having data context.
  
  
  Solution:
  
  
  Perform a selection first:
  
  Enter the required selection criteria and execute the selection (e.g., press the "Execute" button or equivalent). This loads the data into the system.
  
  
  After data is loaded, switch to Change mode:
  
  Once the data is displayed, you can then switch to Change mode to edit or modify the data.
  
  
  Check user guidance:
  
  Follow the standard process flow of the transaction or report. Usually, the UI or documentation will indicate that you must first select or load data.
  
  
  If this happens unexpectedly:  
  
  Verify if the selection screen is properly filled.
  Check if any mandatory fields are missing.
  Ensure that the system is not in an inconsistent state (try restarting the transaction).
  
  
  
  
  Related Information:
  
  This message is a warning (W_) type, so it does not stop the program but prevents mode switching until the prerequisite action is done.
  Common in modules or transactions involving data selection and editing, such as Data Services, Data Migration tools, or custom reports.
  The message ID W_DSD_01059 suggests it might be related to Data Services or Data Selection Dialog components.
  If you are a developer or support consultant, check the program logic that controls mode switching to ensure it enforces the correct sequence.
  
  
  Summary:
  
  
  
  Aspect
  Details
  
  
  
  
  Cause
  Trying to switch to Change mode without first executing a data selection.
  
  
  Solution
  Perform the selection first, then switch to Change mode.
  
  
  Message Type
  Warning (W_) - informational, enforces correct workflow.
  
  
  Context
  Data selection and editing transactions or reports.
  
  
  
  
  If you provide the exact transaction or context where this occurs, I can help with more specific instructions.