How To Fix FKKINV291 - Subst.group invoice printing &1: contains "Tax Included in Amount" field

FKKINV291 - Overview

• Message type: E = Error

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

• Message number: 291

• Message text: Subst.group invoice printing &1: contains "Tax Included in Amount" field

What causes this issue?

For billing document items with the <DS:DE.PRINT_SUBSTITUTE_KK>
Substitute Group for Invoice Printing</> &v1&, the
<DS:DE.TAX_INCLUDED_KK> Tax Included in Amount</> indicator is not
consistent.

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?

The following requirements apply to all billing document items that
belong to a substitute group for invoice printing:
All <DS:DE.POSTREL_KK>posting-relevant</> items have the same value in
the <LS>Tax Included in Amount field.</>
All items that are not posting-relevant have the same value in the
<LS>Tax Included in Amount field.</>

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 FKKINV291 - Subst.group invoice printing &1: contains "Tax Included in Amount" field ?

  The SAP error message FKKINV291 typically occurs in the context of invoice processing within the SAP system, particularly when dealing with billing documents that include tax calculations. This error indicates that there is an issue with the "Tax Included in Amount" field in the invoice printing process.
  
  Cause:
  The error message FKKINV291 is triggered when the system detects that the invoice printing process is attempting to handle a document that has the "Tax Included in Amount" field set, but the system is not configured to process it correctly. This can happen due to several reasons, including:
  
  
  Configuration Issues: The settings in the SAP system for tax calculation or invoice printing may not be properly configured to handle invoices with tax included in the amount.
  Document Type: The document type of the invoice may not support the "Tax Included in Amount" feature.
  Data Inconsistencies: There may be inconsistencies in the data related to the invoice, such