How To Fix M7420 - Place the cursor on the line number to change the serial number entered

SAP Error Message - Details

• Message type: E = Error

• Message class: M7 - Inventory Management and Physical Inventory

• Message number: 420

• Message text: Place the cursor on the line number to change the serial number entered

What causes this issue?

To change the serial numbers entered, you have to place the cursor on
the line number first.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M7420 - Place the cursor on the line number to change the serial number entered ?

  The SAP error message M7420, which states "Place the cursor on the line number to change the serial number entered," typically occurs in the context of inventory management or when dealing with materials that have serial numbers. This error indicates that the system expects you to modify the serial number for a specific line item in a transaction, but the cursor is not positioned correctly.
  Cause:
  
  Incorrect Cursor Position: The most common cause of this error is that the cursor is not placed on the line item where the serial number needs to be changed. The system requires you to select the specific line to make changes.
  Missing Serial Number: If a serial number is required for a material and it has not been entered, this error may also appear.
  Data Entry Error: There may be an issue with how the serial number was entered, such as incorrect formatting or invalid characters.
  
  Solution:
  
  Position the Cursor Correctly: Move the cursor to the line number of the item for which you want to change the serial number. This is usually done by clicking on the line or using the keyboard to navigate to it.
  Enter or Modify Serial Number: Once the cursor is on the correct line, you can enter a new serial number or modify the existing one as needed.
  Check Serial Number Requirements: Ensure that the material you are working with requires a serial number and that you are following the correct format for entering it.
  Review Transaction Type: Make sure you are in the correct transaction type that allows for serial number entry or modification.
  
  Related Information:
  
  Transaction Codes: This error can occur in various transactions, such as goods receipt (MIGO), goods issue, or inventory adjustments.
  Serial Number Management: Familiarize yourself with how SAP handles serial numbers, including settings in the material master and the configuration of serial number profiles.
  User Permissions: Ensure that you have the necessary permissions to modify serial numbers in the system.
  SAP Notes and Documentation: Check SAP Notes for any known issues or updates related to serial number handling in your version of SAP.
  
  If the problem persists after following these steps, it may be helpful to consult with your SAP support team or refer to SAP documentation for further troubleshooting.