How To Fix WRF_APC_INB161 - Duplicate entry (SD_TAB) Distr. Chain: &1 &2 CVAL: &3

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_APC_INB - Messages for OAPC Inbound Processing

• Message number: 161

• Message text: Duplicate entry (SD_TAB) Distr. Chain: &1 &2 CVAL: &3

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message WRF_APC_INB161 - Duplicate entry (SD_TAB) Distr. Chain: &1 &2 CVAL: &3 ?

  Certainly! Here's a detailed explanation for the SAP error message:
  
  SAP Error Message:
  WRF_APC_INB161 Duplicate entry (SD_TAB) Distr. Chain: &1 &2 CVAL: &3
  
  Meaning / Cause:
  This error occurs when there is an attempt to insert or create a duplicate entry in a table or data structure related to distribution chains in the SAP Advanced Planning and Optimization (APO) or Supply Chain Management (SCM) module.
  
  WRF_APC_INB161 is a warning or error message related to the APO integration or inbound processing.
  Duplicate entry (SD_TAB) indicates that the system has found an existing record with the same key values in the distribution chain table (or related structure).
  The placeholders:
  
  &1 = Distribution Chain ID (or related identifier)
  &2 = Possibly another key field or sub-identifier
  &3 = The conflicting value (CVAL) causing the duplication
  
  
  
  This typically happens during master data replication or inbound processing when the system tries to create a distribution chain entry that already exists.
  
  Common Causes:
  
  Data Replication Issues: When master data (e.g., distribution chains) is replicated from SAP ERP to SAP APO, duplicate entries might be attempted due to inconsistent or repeated inbound data.
  Incorrect or Incomplete Data Load: The inbound data might contain duplicate records or the same distribution chain is being processed multiple times.
  Custom Enhancements or User Exits: Custom code or enhancements might be causing duplicate inserts.
  System Inconsistencies: Database inconsistencies or failed previous transactions that left partial data.
  
  
  Solution / How to Fix:
  
  
  Check the Inbound Data:
  
  Verify the inbound IDocs or CIF queues for duplicate distribution chain entries.
  Use transaction /SAPAPO/CIF_INBOUND to monitor inbound queues and check for duplicates.
  
  
  
  Clean Up Duplicate Entries:
  
  Use transaction /SAPAPO/SDP94 or relevant APO master data transactions to check and delete duplicate distribution chains.
  If duplicates exist in the database, remove or merge them carefully.
  
  
  
  Reprocess the Inbound Queue:
  
  After cleaning duplicates, reprocess the inbound queue to ensure data consistency.
  
  
  
  Check for Custom Code:
  
  Review any user exits or BAdIs related to distribution chain processing to ensure no duplicate inserts are being triggered.
  
  
  
  Database Consistency Check:
  
  Run consistency checks or database utilities to ensure no corrupt or duplicate entries exist.
  
  
  
  SAP Notes and Support:
  
  Search for SAP Notes related to WRF_APC_INB161 for any known bugs or patches.
  Example SAP Note: Check SAP Support Portal for notes related to distribution chain duplicates.
  
  
  
  
  Related Information:
  
  
  Transactions:
  
  /SAPAPO/CIF_INBOUND – Monitor CIF inbound queues.
  /SAPAPO/SDP94 – Distribution chain master data maintenance.
  SMQ1 / SMQ2 – Monitor outbound/inbound queues.
  WE02 / WE05 – IDoc monitoring.
  
  
  
  Tables:
  
  Distribution chain related tables in APO, e.g., /SAPAPO/SDPCHAIN or similar.
  
  
  
  Modules:
  
  SAP APO (Advanced Planning and Optimization)
  SAP SCM (Supply Chain Management)
  CIF (Core Interface) for data replication between ERP and APO.
  
  
  
  
  Summary:
  The error WRF_APC_INB161 Duplicate entry (SD_TAB) indicates a duplicate distribution chain entry during inbound processing. The solution involves identifying and removing duplicates in the inbound data or APO master data, reprocessing the inbound queue, and ensuring no custom code causes duplicates.
  
  If you provide the exact system context (e.g., ERP to APO replication, transaction used, or inbound process), I can help with more specific steps.