How To Fix WS571 - Table entry T_YKOMLFK is missing (internal error, transaction abandoned)

SAP Error Message - Details

• Message type: E = Error

• Message class: WS - Supplier Billing Document

• Message number: 571

• Message text: Table entry T_YKOMLFK is missing (internal error, transaction abandoned)

What causes this issue?

Document &V1& has been changed. You must check if subsequent processing
is required for the document (for example, should data be updated to LIS
and BW). To determine this, you must check the status of the document
before and after changes have been made.
The previous status for the document has not been passed to the check
program that is run to ascertain if subsequent processing is required.

System Response

Processing is terminated.

How to fix this error?

Contact your system administrator.

Procedure for System Administrators

Contact SAP as a program error has been generated.
Function module WLF_INV_FOLLOW_DATA_NES_CHECK has been called using
incorrect data (parameter T_YKOMLFK).

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message WS571 - Table entry T_YKOMLFK is missing (internal error, transaction abandoned) ?

  The SAP error message:
  WS571 Table entry T_YKOMLFK is missing (internal error, transaction abandoned)
  typically indicates that a required entry in the table T_YKOMLFK is missing, which causes the transaction to fail and be aborted.
  
  Cause
  
  Missing or inconsistent customizing data: The table T_YKOMLFK is a customizing table related to the Logistics Invoice Verification (LIV) or Materials Management (MM) module, often linked to invoice verification or document flow.
  The system expects certain entries in this table to process the transaction correctly.
  If the entry is missing, it usually means that the customizing for the relevant document type, movement type, or process step is incomplete or corrupted.
  This can happen after a transport, system upgrade, or manual changes in customizing.
  Sometimes, it can also be caused by inconsistent or incomplete configuration in the related area (e.g., invoice verification, document flow, or logistics processes).
  
  
  Solution
  
  
  Check the customizing for T_YKOMLFK:
  
  Use transaction SM30 or SE16N to view the entries in table T_YKOMLFK.
  Identify which entry is missing based on the context of the transaction you are trying to execute.
  The table entries usually correspond to specific document types, process steps, or movement types.
  
  
  
  Compare with a working system or standard SAP customizing:
  
  If you have a sandbox or development system, compare the entries in T_YKOMLFK.
  Transport the missing entries from a working system if applicable.
  
  
  
  Reapply or correct customizing:
  
  Go to the IMG (Implementation Guide) and check the relevant customizing path related to invoice verification or logistics document flow.
  Reapply or correct the customizing settings that maintain the entries in T_YKOMLFK.
  
  
  
  Check OSS Notes:
  
  Search SAP OSS Notes for WS571 or T_YKOMLFK related issues.
  Sometimes SAP provides notes with corrections or instructions for missing customizing entries.
  
  
  
  Debugging (if necessary):
  
  If the cause is not clear, debugging the transaction can help identify which key or entry is missing.
  This can help pinpoint the exact customizing entry that needs to be created.
  
  
  
  
  Related Information
  
  Table T_YKOMLFK is related to the Invoice Verification process in Materials Management.
  The error WS571 is an internal error indicating a missing table entry that is critical for the transaction logic.
  This error is often seen in transactions related to invoice verification, such as MIRO or related logistics invoice processes.
  Ensuring consistent and complete customizing in the invoice verification area is key to preventing this error.
  Always check for recent transports or changes in customizing that might have affected this table.
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WS571 Table entry T_YKOMLFK is missing (internal error, transaction abandoned)
  
  
  Cause
  Missing or incomplete customizing entry in table T_YKOMLFK related to invoice verification
  
  
  Solution
  Check and maintain missing entries in T_YKOMLFK via customizing; compare with working system; apply SAP Notes if available
  
  
  Related Info
  Invoice Verification (MM-IV), document flow customizing, SAP OSS Notes, debugging
  
  
  
  
  If you provide the transaction code or process step where this error occurs, I can help you identify the exact customizing path or entries to check.