How To Fix F8126 - Do not specify a posting key on the credit side

SAP Error Message - Details

• Message type: E = Error

• Message class: F8 -

• Message number: 126

• Message text: Do not specify a posting key on the credit side

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 F8126 - Do not specify a posting key on the credit side ?

  The SAP error message F8126, "Do not specify a posting key on the credit side," typically occurs during the posting of financial transactions in the SAP system, particularly in the context of financial accounting (FI). This error indicates that there is an issue with the way the posting keys are being used in the transaction.
  Cause:
  
  
  Incorrect Posting Key Usage: In SAP, posting keys are used to define the type of transaction being posted (debit or credit). The error occurs when a posting key is incorrectly specified for a credit entry. In standard practice, credit entries should not have a posting key specified in certain contexts, such as when using certain transaction types or when the system expects automatic postings.
  
  
  Configuration Issues: There may be configuration settings in the financial accounting module that are not aligned with the transaction being processed.
  
  
  User Input Error: The user may have inadvertently entered a posting key when it should not have been entered, especially in manual postings.
  
  
  Solution:
  
  
  Review Posting Keys: Check the transaction you are trying to post and ensure that you are using the correct posting keys. For credit entries, you typically should not specify a posting key if the system is set to handle it automatically.
  
  
  Correct Transaction Type: Ensure that you are using the correct transaction type for the posting. Some transaction types may have specific requirements regarding posting keys.
  
  
  Consult Documentation: Refer to SAP documentation or help resources to understand the specific requirements for the transaction you are attempting to post.
  
  
  Configuration Check: If you have access, check the configuration settings in the Financial Accounting module to ensure that they are set up correctly for the type of transaction you are processing.
  
  
  User Training: If this error is occurring frequently, consider providing additional training for users on how to correctly enter financial transactions in SAP.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP frequently updates its knowledge base with solutions to common problems.
  Transaction Codes: Familiarize yourself with relevant transaction codes (e.g., FB50 for general ledger postings) and their specific requirements regarding posting keys.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  
  If the problem persists after following these steps, it may be necessary to consult with your SAP support team or a functional consultant who specializes in financial accounting within SAP.