How To Fix WRF_APC755 - Internal transportation chain changed / system recalculated the dateline

SAP Error Message - Details

• Message type: E = Error

• Message class: WRF_APC - Messages for Operational Assortment Planning and Control

• Message number: 755

• Message text: Internal transportation chain changed / system recalculated the dateline

Self-Explanatory Message

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• What is the cause and solution for SAP error message WRF_APC755 - Internal transportation chain changed / system recalculated the dateline ?

  SAP Error Message:
  
  WRF_APC755 – Internal transportation chain changed / system recalculated the dateline
  
  Cause
  This message typically occurs in SAP Advanced Planning and Optimization (APO) or Supply Chain Planning (SCP) environments, particularly during transportation planning or production planning runs. The system detects that the internal transportation chain (i.e., the sequence or timing of transportation legs between locations) has changed compared to the previous planning run or the original data.
  Because the transportation chain has changed, the system recalculates the dateline (the planned arrival or departure dates) to reflect the updated transportation times or sequences.
  Common causes include:
  
  Changes in transportation lanes or routes (e.g., new or deleted transportation lanes).
  Changes in transportation lead times or transit times.
  Manual or automatic adjustments in transportation scheduling.
  Master data changes affecting transportation (e.g., changes in location relationships, transportation mode, or transit times).
  System recalculation triggered by planning heuristics or optimization runs.
  
  
  Solution
  
  
  Review Transportation Master Data:
  
  Check transportation lanes, transit times, and transportation mode data in the system.
  Verify if any recent changes have been made to transportation lanes or transit times.
  Ensure that the transportation data is consistent and correct.
  
  
  
  Analyze Planning Run Logs:
  
  Look at the detailed planning run logs or messages to understand what triggered the change.
  Identify if the change was expected (e.g., due to updated master data) or unexpected.
  
  
  
  Check Planning Parameters:
  
  Review the planning heuristics or optimization parameters that might influence transportation chain recalculations.
  Adjust parameters if necessary to prevent unwanted recalculations.
  
  
  
  Re-run Planning:
  
  After verifying and correcting master data or parameters, re-run the planning to confirm that the message no longer appears or that the recalculation is as expected.
  
  
  
  Consult SAP Notes / Support:
  
  If the message persists unexpectedly or causes issues, check SAP Notes for any known bugs or patches related to WRF_APC755.
  Contact SAP Support with detailed logs if needed.
  
  
  
  
  Related Information
  
  Module: SAP APO / Supply Chain Planning (SCP)
  Transaction Codes: /SAPAPO/SDP94 (Supply Network Planning), /SAPAPO/TP (Transportation Planning)
  Master Data Objects: Transportation Lanes, Locations, Transit Times
  Planning Objects: Transportation Chains, Datelines (planned dates)
  SAP Notes: Search for notes related to WRF_APC755 or transportation chain recalculations in SAP Support Portal.
  Documentation: SAP APO Transportation Planning guides and help documentation.
  
  
  Summary
  The WRF_APC755 message informs you that the system detected a change in the internal transportation chain and recalculated the dateline accordingly. This is usually due to changes in transportation master data or planning parameters. To resolve, verify and correct transportation data, review planning settings, and ensure that the recalculation aligns with your supply chain requirements.