How To Fix M8642 - No additional fields defined for this line layout

SAP Error Message - Details

• Message type: E = Error

• Message class: M8 - Invoice Verification/Valuation

• Message number: 642

• Message text: No additional fields defined for this line layout

What causes this issue?

For the selected line layout, the system configuration settings do
not contain any specifications concerning additional fields.

How to fix this error?

You may want to choose a line layout that contains the desired field
(if so, choose "Settings --> Line layout").
If you require additional fields for the set line layout, you must
ask your system administrator to change the display variant in the
Customizing system of Invoice Verification. For
the line layout, you can enter the fields to be used as additional
fields by choosing "Environment --> Field selection --> Additional
fields".

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message M8642 - No additional fields defined for this line layout ?

  The SAP error message M8642, "No additional fields defined for this line layout," typically occurs in the context of the Material Management (MM) module, particularly when dealing with line layouts in reports or transactions that involve material documents or inventory management.
  Cause:
  This error usually arises when:
  
  Line Layout Configuration: The line layout being used does not have any additional fields defined. This can happen if the layout is not properly configured or if the necessary fields have not been added to the layout.
  Customizations: If there are customizations or enhancements in the system that affect the line layout, it may lead to this error if the custom fields are not properly defined.
  Missing Authorizations: Sometimes, the user may not have the necessary authorizations to view or access certain fields in the layout.
  
  Solution:
  To resolve the M8642 error, you can take the following steps:
  
  
  Check Line Layout Configuration:
  
  Go to the transaction code for the relevant report or transaction where the error occurs.
  Check the line layout settings. You can usually find this in the configuration settings for the specific report or transaction.
  Ensure that the additional fields you want to display are defined in the line layout.
  
  
  
  Modify or Create a New Layout:
  
  If the current layout does not meet your requirements, consider creating a new line layout or modifying the existing one to include the necessary fields.
  Use transaction codes like SE93 (for transaction variants) or SE80 (for development workbench) to adjust the layout.
  
  
  
  Check User Authorizations:
  
  Ensure that the user encountering the error has the necessary authorizations to access the fields in the line layout.
  You may need to consult with your SAP security team to verify and adjust user roles and permissions.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or help files related to the specific transaction or report to understand the expected configuration for line layouts.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the configuration and authorizations, consider reaching out to SAP support for further assistance. They may provide insights specific to your system version or configuration.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as MB51 (Material Document List), MB1A (Goods Withdrawal), or others related to material management where this error might occur.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide specific fixes or patches that address known issues.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the M8642 error and implement a suitable solution.