How To Fix WS009 - Import parameters for schema determinaton faulty (internal error)

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 009

• Message text: Import parameters for schema determinaton faulty (internal error)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WS009 - Import parameters for schema determinaton faulty (internal error) ?

  SAP Error Message:
  WS009 - Import parameters for schema determination faulty (internal error)
  
  
  Cause:
  This error typically occurs during IDoc processing or ALE/EDI inbound processing when the system tries to determine the correct schema for an incoming IDoc but fails due to incorrect or incomplete import parameters. The schema determination logic relies on certain parameters (like message type, receiver port, partner profile, etc.) to select the appropriate XML schema or IDoc processing routine. If these parameters are missing, inconsistent, or corrupted, the system cannot find the correct schema, resulting in this internal error.
  Common causes include:
  
  Incorrect or missing partner profile configuration.
  Missing or incorrect message type or basic type in the IDoc.
  Inconsistent or incomplete ALE/EDI configuration.
  Corrupted or incomplete IDoc data.
  Issues in the schema determination customizing (WE20, WE21, WE30, etc.).
  Transport or system inconsistencies after system upgrades or patches.
  
  
  
  Solution:
  
  
  Check Partner Profiles (WE20):
  Verify that the partner profiles are correctly maintained for the sender and receiver. Ensure the message