How To Fix FKKINV593 - Invoicing function &1 is not supported in target process &2

FKKINV593 - Overview

• Message type: E = Error

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

• Message number: 593

• Message text: Invoicing function &1 is not supported in target process &2

What causes this issue?

According to your system settings, the <DS:DE.INV_FUNCTION_KK>invoicing
function</> &V1& should be executed as part of the processing of
<DS:DE.INV_PROCESS_KK>invoicing process</> &V3&. However, this is not
supported in <DS:DE.TARGPROCESS_KK>target process</> &V2&.

System Response

The invoicing function &V1& is not executed.

How to fix this error?

To suppress this message, deactivate the invoicing function in the
configuration of invoicing process &V3&.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

FKKINV593 - Details

• The SAP error message FKKINV593 indicates that the invoicing function you are trying to use is not supported in the specified target process. This error typically arises in the context of SAP Convergent Charging or SAP Contract Accounts Receivable and Payable (FI-CA) when there is an attempt to perform an invoicing operation that is not compatible with the current process or configuration.
  
  Cause:
  
  Incompatible Invoicing Function: The invoicing function you are trying to execute is not designed to work with the target process you are using. This could be due to a mismatch between the invoicing type and the process type.
  
  Configuration Issues: There may be configuration settings in the system that do not allow the specified invoicing function to be executed in the current context.
  Process Restrictions: Certain processes may have restrictions on the types of invoicing functions that can be executed, leading to this error.
  
  
  Solution:
  
  Check Configuration: Review the configuration settings for the