How To Fix FKKINV395 - Main/subtransaction in billing document item &1 not allowed to be initial

FKKINV395 - Overview

• Message type: E = Error

• Message class: FKKINV - Invoicing in Contract Accounts Receivable and Payable

• Message number: 395

• Message text: Main/subtransaction in billing document item &1 not allowed to be initial

What causes this issue?

In <DS:DE.BILLDOCITEM_KK>billing document item</> &v1&, the
<DS:DE.HVORG_KK>main transaction</>/<DS:DE.TVORG_KK>subtransaction</> is
not entered. This is not allowed for billing document items that are
<DS:DE.POSTREL_KK>relevant for posting</> or that contain a
<DS:DE.PRINT_SUBSTITUTE_KK>substitute group for invoice printing</>.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FKKINV395 - Main/subtransaction in billing document item &1 not allowed to be initial ?

  The SAP error message FKKINV395 indicates that there is an issue with the billing document item in the context of the contract accounts receivable and payable (FI-CA) module. Specifically, the error states that the main or subtransaction in the billing document item cannot be initial (i.e., it cannot be empty).
  
  Cause:
  This error typically occurs due to one of the following reasons:
  
  Missing Transaction Data: The billing document item is missing a main or subtransaction code, which is required for processing.
  
  Configuration Issues: The configuration settings for the billing document type may not be set up correctly, leading to the requirement for a transaction code that is not being provided.
  Data Entry Errors: There may have been an error during data entry or data migration that resulted in the transaction fields being left blank.
  
  
  Solution:
  To resolve the FKKINV395 error, you can take the following steps:
  
  
  Check Billing Document Item:
  
  Go to the billing document in question and check