How To Fix WS128 - Enter a settlement document type

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 128

• Message text: Enter a settlement document type

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS128 - Enter a settlement document type ?

  SAP Error Message:
  WS128 - Enter a settlement document type
  
  
  Cause:
  This error occurs when you are trying to perform a settlement process (such as settling costs from a cost center, internal order, or project) but have not specified the Settlement Document Type in the settlement parameters. The system requires a settlement document type to know how to post the settlement document in Financial Accounting (FI).
  
  Explanation:
  
  In SAP Controlling (CO), when you settle costs from an object (like an internal order or WBS element), the system creates a financial document to post the settlement.
  The Settlement Document Type determines the type of FI document that will be created (e.g., KR for vendor invoice, SA for general ledger document).
  If this document type is missing or not maintained in the settlement profile or settlement rule, the system cannot proceed and throws the WS128 error.
  
  
  
  Solution:
  
  
  Check Settlement Profile:
  
  Go to transaction OKO7 (Maintain Settlement Profiles).
  Verify that the settlement profile assigned