How To Fix VFKK121 - Billing type of reversal &1 or original &2 not of type invoicing order

SAP Error Message - Details

• Message type: E = Error

• Message class: VFKK -

• Message number: 121

• Message text: Billing type of reversal &1 or original &2 not of type invoicing order

What causes this issue?

The billing type &V2& and the assigned reversal billing type &V1& have
to be treated the same by FI-CA invoicing. That means that they both
have to be processed with an FI-CA invoicing order, or they both have to
be posted directly as FI-CA documents.

How to fix this error?

Change the settings in posting area 1205 in Customizing for Contract
Accounts Receivable and Payable under <LS>Integration -> Sales and
Distribution -> Define Settings for Transfer to Invoicing</>.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message VFKK121 - Billing type of reversal &1 or original &2 not of type invoicing order ?

  The SAP error message VFKK121 indicates that there is an issue with the billing types being used in a reversal or original billing document. Specifically, it suggests that the billing type of the reversal document (denoted as &1) or the original document (denoted as &2) is not of the type that is expected for invoicing orders.
  Cause:
  
  Incorrect Billing Type: The billing type used for the reversal or original document is not configured as an invoicing order type in the system. This can happen if the billing type is set up incorrectly in the configuration or if the wrong billing type is being used in the transaction.
  Document Flow Issues: The document flow may not be correctly established, leading to inconsistencies in the billing types.
  Customizations: If there are custom developments or modifications in the billing process, they may not align with the standard expectations of billing types.
  
  Solution:
  
  
  Check Billing Type Configuration:
  
  Go to the configuration settings for billing types in SAP (Transaction code: SPRO).
  Navigate to Sales and Distribution > Billing > Billing Documents > Define Billing Types.
  Ensure that the billing types for both the original and reversal documents are correctly set up as invoicing types.
  
  
  
  Verify Document Flow:
  
  Check the document flow for the original billing document to ensure that it is correctly linked to the reversal document.
  Use transaction code VF03 to display the original document and verify its details.
  
  
  
  Use Correct Billing Types:
  
  When creating a reversal document, ensure that you are using the correct billing type that is designated for invoicing orders.
  If necessary, consult with your SAP functional consultant to identify the appropriate billing types to use.
  
  
  
  Testing:
  
  After making any changes, perform a test to create a reversal document to ensure that the error does not occur again.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to billing types and invoicing orders for any additional insights or updates.
  
  
  
  Related Information:
  
  Transaction Codes: 
  
  VF01: Create Billing Document
  VF02: Change Billing Document
  VF03: Display Billing Document
  
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance.
  User Exits and Enhancements: If there are custom enhancements in your SAP environment, review them to ensure they are not interfering with the standard billing process.
  
  If the issue persists after following these steps, it may be beneficial to engage with your SAP support team or a consultant who specializes in SAP SD (Sales and Distribution) for further assistance.