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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• 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 type and process code are correctly assigned.
  
  
  Verify Message Type and Basic Type:
  
  Check the IDoc's control record (transaction WE02 or WE05) to ensure the message type and basic type are correctly set and correspond to the configured schemas.
  
  
  Check Schema Determination Configuration:  
  
  Use transaction WE30 to check the IDoc types and their associated segments.
  Use WE21 to verify ports.
  Check the schema determination customizing in WE57 or related transactions to ensure the system can find the correct schema based on the import parameters.
  
  
  
  Reprocess or Recreate IDoc:
  
  If the IDoc data is corrupted, try to reprocess or regenerate the IDoc.
  
  
  Check for System Notes and Patches:
  
  Sometimes this error is caused by known bugs fixed in SAP Notes. Search the SAP Support Portal for notes related to WS009 or schema determination errors.
  
  
  Debugging:
  
  If the above steps do not resolve the issue, debugging the function module responsible for schema determination (e.g., IDOC_INPUT_* or related user exits) may help identify the exact parameter causing the failure.
  
  
  
  Related Information:
  
  Transactions: WE02, WE05 (IDoc display), WE20 (Partner profiles), WE21 (Ports), WE30 (IDoc types), WE57 (Schema determination)
  SAP Notes: Search for "WS009" or "Import parameters for schema determination faulty" on SAP ONE Support Launchpad.
  IDoc Processing: Understanding the IDoc control record and data segments is crucial.
  ALE/EDI Configuration: Proper setup of partner profiles, ports, and message types is essential for smooth IDoc processing.
  
  
  If you provide the context in which this error occurs (e.g., inbound IDoc processing, specific message type), I can help with more targeted troubleshooting steps.