How To Fix FKKBIX299 - Main/subtransaction in billable item not allowed to be blank or 0

FKKBIX299 - Overview

• Message type: E = Error

• Message class: FKKBIX - Conv.Inv.: Billing (Invoice Preprocessing)

• Message number: 299

• Message text: Main/subtransaction in billable item not allowed to be blank or 0

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 FKKBIX299 - Main/subtransaction in billable item not allowed to be blank or 0 ?

  The SAP error message FKKBIX299 indicates that there is an issue with a billable item in a financial transaction where the main or subtransaction is either blank or set to zero. This error typically occurs in the context of billing or invoicing processes, particularly when dealing with accounts receivable or billing documents.
  
  Cause:
  
  Missing Main/Subtransaction: The main or subtransaction code is not specified in the billing document. This could happen if the transaction was not properly configured or if the user did not enter the required information.
  Incorrect Configuration: The configuration settings for the billing document type or the relevant transaction types may not allow for blank or zero values.
  Data Entry Error: There may have been a mistake during data entry, leading to the omission of the necessary transaction codes.
  
  
  Solution:
  
  Check Transaction Codes: Ensure that the main and subtransaction codes are correctly entered in the billing document. If they are missing, you will need