How To Fix GB421 - Line & does not exist

SAP Error Message - Details

• Message type: E = Error

• Message class: GB - Messages used by the Boolean code generator

• Message number: 421

• Message text: Line & does not exist

What causes this issue?

You are using the simulation or trace function in a matrix validation
or sbstitution. Such validations (or substitutions) process data in the
form of flat structures and internal tables. In your case the table has
the line structure type &V3&. You entered a line index (&V1&) that is
either greater than the total number of lines in the table (&V2&) or is
less than one.

System Response

Input is interrupted.

How to fix this error?

Enter a number between one and &V2&. If you want to add a new table
line, choose <LS>Edit -> Insert table line</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message GB421 - Line & does not exist ?

  The SAP error message GB421 ("Line & does not exist") typically occurs in the context of financial documents, such as invoices or purchase orders, when the system is unable to find a specific line item that is expected to be present in the document. This can happen for various reasons, and understanding the cause is crucial for resolving the issue.
  Causes:
  
  Line Item Deletion: The line item may have been deleted or not created properly in the document.
  Incorrect Document Reference: The document number or reference being used may be incorrect, leading to the system not finding the expected line item.
  Data Entry Errors: There may be typographical errors in the line item number or other related fields.
  Document Status: The document may be in a status that does not allow for certain operations, such as being locked or in a draft state.
  Configuration Issues: There may be configuration settings in the SAP system that are affecting how line items are processed or displayed.
  
  Solutions:
  
  Verify Document: Check the document number and ensure that it is correct. Look for the specific line item in the document to confirm its existence.
  Check for Deletions: If the line item was deleted, you may need to recreate it or adjust the document accordingly.
  Review Input Data: Ensure that all data entered is accurate and corresponds to existing line items.
  Document Status: Check the status of the document to ensure it is not locked or in a state that prevents access to line items.
  Consult with IT or SAP Support: If the issue persists, it may be necessary to consult with your IT department or SAP support for further investigation, especially if it appears to be a configuration issue.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as ME23N (Display Purchase Order), FB03 (Display Document), or MIRO (Enter Incoming Invoice) to navigate and check the documents.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Permissions: Ensure that the user has the necessary permissions to view and edit the document in question.
  
  By following these steps, you should be able to identify the cause of the GB421 error and implement a solution to resolve it.