How To Fix /ACCGO/FEE_SI018 - Invoice &1 generated for reverse SI posting

SAP Error Message - Details

• Message type: E = Error

• Message class: /ACCGO/FEE_SI -

• Message number: 018

• Message text: Invoice &1 generated for reverse SI posting

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 /ACCGO/FEE_SI018 - Invoice &1 generated for reverse SI posting ?

  The SAP error message /ACCGO/FEE_SI018 Invoice &1 generated for reverse SI posting typically occurs in the context of the SAP system when dealing with reverse postings related to service invoices (SI). This error indicates that an invoice has been generated as a result of a reverse posting, which may not be the expected behavior in certain scenarios.
  Cause:
  
  Reverse Posting Logic: The error is often triggered when a reverse posting is executed for a service invoice that has already been processed. The system attempts to generate a new invoice to reflect the reversal, which can lead to confusion or errors if not handled properly.
  Configuration Issues: There may be configuration settings in the SAP system that dictate how reverse postings are handled, which could lead to unexpected invoice generation.
  Data Integrity Issues: There might be inconsistencies in the data related to the original service invoice or the reverse posting, causing the system to generate an invoice erroneously.
  
  Solution:
  
  Review the Reverse Posting Process: Ensure that the reverse posting is being executed correctly. Check the original service invoice and confirm that the reversal is necessary and valid.
  Check Configuration Settings: Review the configuration settings related to service invoicing and reverse postings in the SAP system. Ensure that they align with the business processes and requirements.
  Analyze the Generated Invoice: Investigate the invoice that was generated as a result of the reverse posting. Determine if it is valid and if it needs to be processed further or if it can be canceled.
  Consult SAP Notes: Check for any relevant SAP Notes or updates that may address this specific error message. SAP frequently releases patches and updates that can resolve known issues.
  Engage with SAP Support: If the issue persists, consider reaching out to SAP support for assistance. Provide them with detailed information about the error, including the steps taken leading up to the error and any relevant configuration settings.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as FB08 (to reverse a document) and FBRA (to reverse a clearing).
  Documentation: Review SAP documentation related to service invoicing and reverse postings to understand the expected behavior and configurations.
  Testing: If possible, replicate the issue in a test environment to better understand the cause and to test potential solutions without impacting production data.
  
  By following these steps, you should be able to diagnose and resolve the error message /ACCGO/FEE_SI018 effectively.