How To Fix WS877 - Multiple customers found for ILN &

WS877 - Overview

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 877

• Message text: Multiple customers found for ILN &

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS877 - Multiple customers found for ILN & ?

  SAP Error Message:
  WS877 - Multiple customers found for ILN &
  
  
  Cause:
  This error occurs when SAP tries to identify a business partner (customer) using an ILN (International Location Number), but finds more than one customer master record associated with the same ILN. The system expects a unique match but encounters multiple entries, causing ambiguity.
  Typical scenarios include:
  
  Multiple customer master records have the same ILN assigned.
  The ILN is used as a key to identify customers in processes like EDI, IDoc processing, or business partner determination.
  Data inconsistencies or duplicates in customer master data.
  
  
  Explanation:
  
  ILN (International Location Number) is often used in logistics and EDI to uniquely identify a location or partner.
  When SAP processes documents (e.g., inbound IDocs, orders, deliveries) and tries to find the customer by ILN, it expects a single match.
  If multiple customers share the same ILN, SAP cannot decide which customer to use, hence the error WS877.
  
  
  
  Solution:
  
  
  Identify Duplicate Customers:
  
  Use transaction XD03 (Display Customer) or