How To Fix FKKZWF021 - Specify the reference number

FKKZWF021 - Overview

• Message type: E = Error

• Message class: FKKZWF - Doubtful Item Entry/Individual Value Adjustment

• Message number: 021

• Message text: Specify the reference number

Self-Explanatory Message

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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.

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FKKZWF021 - Details

• The SAP error message FKKZWF021 ("Specify the reference number") typically occurs in the context of the Contract Accounts Receivable and Payable (FI-CA) module when a user attempts to process a transaction that requires a reference number, but none has been provided.
  
  Cause:
  The error is usually triggered in the following scenarios:
  
  Missing Reference Number: The transaction being processed requires a reference number (such as a document number or invoice number), but the user has not entered one.
  Incorrect Transaction Type: The transaction type being used may inherently require a reference number, and the system is enforcing this requirement.
  
  Configuration Issues: There may be configuration settings in the FI-CA module that mandate the use of reference numbers for certain transactions.
  
  
  Solution:
  To resolve the error, you can take the following steps:
  
  
  Enter a Reference Number: Ensure that you provide a valid reference number in the relevant field when processing the transaction. This could be an invoice number, document number,