BKN004 - Enter a reference number

SAP Error Message - Details

• Message type: E = Error

• Message class: BKN - Manual Actual Postings in CO

• Message number: 004

• Message text: Enter a reference number

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 BKN004 - Enter a reference number ?

  The SAP error message BKN004 ("Enter a reference number") typically occurs in the context of financial transactions, particularly when dealing with bank transactions or payment processing. This error indicates that a reference number, which is often required for tracking and identifying transactions, has not been provided.
  Cause:
  
  Missing Reference Number: The most common cause is that the user has not entered a reference number in the relevant field when trying to process a transaction.
  Configuration Issues: There may be configuration settings in the SAP system that require a reference number for certain types of transactions, and these settings may not be properly set up.
  User Input Error: The user may have overlooked the field or mistakenly left it blank.
  
  Solution:
  
  Enter a Reference Number: The immediate solution is to check the transaction screen where the error occurred and enter a valid reference number in the designated field.
  Check Configuration: If the reference number is not required for all transactions, check the configuration settings in the SAP system to ensure that the requirement for a reference number is appropriate for the specific transaction type.
  User Training: Ensure that users are trained on the importance of entering a reference number and how to do so correctly in the system.
  Consult Documentation: Review SAP documentation or help files related to the specific transaction to understand the requirements for reference numbers.
  
  Related Information:
  
  Transaction Codes: The error may occur in various transaction codes related to banking, such as F110 (Automatic Payment Transactions) or F-53 (Post Outgoing Payments).
  SAP Notes: Check SAP Notes for any known issues or updates related to this error message. SAP frequently releases notes that address specific error messages and provide guidance on how to resolve them.
  User Forums: Consider visiting SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  If the problem persists after following these steps, it may be necessary to consult with your SAP support team or a technical consultant for further assistance.