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