How To Fix WS161 - Account key not maintained for settlement document type &1

WS161 - Overview

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 161

• Message text: Account key not maintained for settlement document type &1

What causes this issue?

The Customizing settings for settlement process type &V2& and settlement
document type &V1& are inconsistent.
You have entered <AB>X</> <LS>Net</> or <AB>B</> <LS>Gross</> in the
<DS:DE.WVOLP>Post Business Volume in Accounting</> field for the
settlement process type. However, you have not entered a value in the
<DS:DE.KTOSL_VE>Account Key for Clearing Line</> field in the
settlement document type and this is required in this case.

System Response

INCLUDE ISR_VERARBEITUNG OBJECT DOKU ID TX

How to fix this error?

Enter the required account key for settlement document type &V1& or
change the setting for the business volume posting for settlement
process type &V2&.

Error message extract from SAP system. Copyright SAP SE.

WS161 - Details

• Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WS161 - Account key not maintained for settlement document type &1
  
  
  Cause:
  This error occurs because the system is trying to post or settle a document using a settlement document type for which the account key has not been maintained in the configuration. The account key is essential for determining the G/L account to be posted during settlement.
  In SAP, settlement document types require an account key to link the settlement transaction to the correct G/L accounts. If this link is missing, the system cannot determine the correct accounts and throws this error.
  
  Where it occurs:
  
  During settlement of internal orders, WBS elements, or other objects.
  When posting settlement documents.
  In transaction codes related to settlement like KO88, CJ88, or during automatic settlement runs.
  
  
  
  Solution:
  
  
  Maintain Account Key for Settlement Document Type:
  
  
  Go to the IMG path:
  SPRO -> Controlling -> Internal Orders -> Settle Internal Orders -> Define Settlement