How To Fix CM_SUB020 - Select a blank line

SAP Error Message - Details

• Message type: E = Error

• Message class: CM_SUB - Substance (general)

• Message number: 020

• Message text: Select a blank line

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 CM_SUB020 - Select a blank line ?

  The SAP error message CM_SUB020, which states "Select a blank line," typically occurs in the context of certain transactions or processes where the system expects the user to select a blank line for further action. This error is often encountered in the context of creating or modifying data entries, such as in the configuration of materials, production orders, or other master data.
  Cause:
  
  No Blank Line Selected: The most common cause of this error is that the user has not selected a blank line in a table or list where a new entry is to be created.
  Incorrect Navigation: The user may have navigated to a screen or function that requires a blank line to be selected but has not done so.
  User Interface Issue: Sometimes, the user interface may not clearly indicate where a blank line is available for selection.
  
  Solution:
  
  Select a Blank Line: Ensure that you are selecting a blank line in the relevant table or list. This is usually done by clicking on the empty row or line where new data can be entered.
  Check for Existing Entries: If there are no blank lines available, you may need to create a new entry by first ensuring that the previous entries are saved or that you have navigated to a section where new entries can be made.
  Refresh the Screen: If you believe there should be a blank line available, try refreshing the screen or navigating away and back to the relevant section.
  Consult Documentation: If you are unsure about the process, refer to the SAP documentation or help resources specific to the transaction you are working on.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transaction codes depending on the context (e.g., MM01 for material creation, CO01 for production order creation).
  User Training: Ensure that users are trained on how to navigate the SAP interface and understand how to select blank lines for data entry.
  SAP Notes: Check SAP Notes or the SAP Support Portal for any known issues or patches related to this error message.
  System Configuration: In some cases, system configuration or customizations may affect how blank lines are displayed or selected.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP support team or a functional consultant who can provide more specific guidance based on your system's configuration and the context in which the error occurs.