How To Fix FWTR108 - Class & not permitted as underlying transaction

SAP Error Message - Details

• Message type: E = Error

• Message class: FWTR - Securities Transaction Management

• Message number: 108

• Message text: Class & not permitted as underlying transaction

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FWTR108 - Class & not permitted as underlying transaction ?

  The SAP error message FWTR108 indicates that a specific class is not permitted as an underlying transaction. This error typically arises in the context of financial transactions, particularly when dealing with the posting of documents or when trying to execute certain financial operations that involve class-based transactions.
  Cause:
  The error can occur due to several reasons:
  
  Configuration Issues: The class in question may not be properly configured in the system to allow for the underlying transaction.
  Authorization Problems: The user may not have the necessary authorizations to perform the transaction with the specified class.
  Transaction Type Restrictions: Certain transaction types may have restrictions on which classes can be used as underlying transactions.
  Custom Development: If there are custom developments or enhancements in the system, they may inadvertently restrict the use of certain classes.
  
  Solution:
  To resolve the FWTR108 error, you can take the following steps:
  
  
  Check Configuration:
  
  Review the configuration settings for the class in question. Ensure that it is set up correctly to allow the underlying transaction.
  Navigate to the relevant configuration area in SAP (e.g., SPRO) and check the settings for the financial transaction types and classes.
  
  
  
  Review Authorizations:
  
  Ensure that the user has the necessary authorizations to perform the transaction. This can be checked in the user roles and profiles assigned to the user.
  If necessary, consult with your SAP security team to adjust the authorizations.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files related to the specific transaction and class to understand any restrictions or requirements.
  
  
  
  Check for Custom Code:
  
  If there are any custom developments or enhancements, review the code to ensure that it is not causing the restriction. You may need to involve your ABAP developers for this.
  
  
  
  Testing:
  
  After making any changes, perform tests to ensure that the issue is resolved and that the transaction can be executed successfully.
  
  
  
  Contact SAP Support:
  
  If the issue persists after checking the above points, consider reaching out to SAP support for further assistance. Provide them with detailed information about the error and the context in which it occurs.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with the transaction codes related to financial postings and document management in SAP.
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide additional guidance.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to identify the root cause of the FWTR108 error and implement an appropriate solution.