How To Fix FUCN_UI002 - No negative posting is allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: FUCN_UI - Message class for fucn ui

• Message number: 002

• Message text: No negative posting is allowed

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message FUCN_UI002 - No negative posting is allowed ?

  The SAP error message FUCN_UI002: No negative posting is allowed typically occurs in the context of financial transactions, particularly when dealing with postings in the SAP system that do not permit negative amounts. This error is often encountered in modules like SAP Financial Accounting (FI) or Controlling (CO).
  Cause:
  
  
  Negative Amount Posting: The primary cause of this error is an attempt to post a transaction with a negative amount in a context where negative postings are not allowed. This could happen in various scenarios, such as:
  
  Trying to reverse a transaction that is not set up to allow negative postings.
  Posting a credit entry when the system is configured to only allow debit entries or vice versa.
  Incorrect configuration of the account settings in the chart of accounts or the posting rules.
  
  
  
  Account Configuration: Certain accounts may be configured to disallow negative postings. This is often the case for revenue accounts or certain expense accounts.
  
  
  Transaction Type Restrictions: Some transaction types may have restrictions on negative postings based on business rules or regulatory requirements.
  
  
  Solution:
  
  
  Review the Posting Amount: Ensure that the amount you are trying to post is positive if the system does not allow negative postings. If you intended to reverse a transaction, consider using the appropriate reversal transaction instead.
  
  
  Check Account Configuration: 
  
  Go to the account settings in the SAP system and verify if the account you are trying to post to allows negative postings.
  If necessary, consult with your SAP administrator or finance team to adjust the account settings.
  
  
  
  Use Correct Transaction Types: If you are trying to reverse a transaction, ensure you are using the correct transaction type that allows for reversals.
  
  
  Consult Documentation: Review the relevant SAP documentation or configuration guides for your specific version of SAP to understand the rules around negative postings.
  
  
  Seek Help from SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support or your internal SAP helpdesk for further assistance.
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB50 (General Ledger), FB08 (Document Reversal), and others that may be relevant to your posting scenario.
  User Roles and Authorizations: Ensure that your user role has the necessary authorizations to perform the intended transactions.
  SAP Notes: Check for any SAP Notes related to this error message, as they may provide additional insights or patches that could resolve the issue.
  
  By following these steps, you should be able to identify the cause of the error and implement a solution to resolve it.