How To Fix FKKBIX177 - Numerals not allowed as first character (reserved for SAP)

FKKBIX177 - Overview

• Message type: E = Error

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

• Message number: 177

• Message text: Numerals not allowed as first character (reserved for SAP)

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.

FKKBIX177 - Details

• The SAP error message FKKBIX177 indicates that a numeral (0-9) is being used as the first character in a field where it is not allowed. This typically occurs in contexts where certain identifiers, such as account numbers, document numbers, or other key fields, are expected to start with a letter or a specific character rather than a numeral.
  
  Cause:
  
  Invalid Input: The user has entered a value that starts with a numeral in a field that does not permit it.
  
  Configuration Issues: The system may have specific configurations or validations that restrict the use of numerals as the first character in certain fields.
  Data Migration Issues: If data has been migrated from another system, it may contain values that do not comply with SAP's requirements.
  
  
  Solution:
  
  Correct the Input: Review the input value and ensure that it starts with a valid character (usually a letter). For example, if you are entering an account number, make sure