How To Fix WRF_APC500 - **** From 501 to 699, messages are reserved to Dialog Processing ****

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 500

• Message text: **** From 501 to 699, messages are reserved to Dialog Processing ****

Self-Explanatory Message

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• What is the cause and solution for SAP error message WRF_APC500 - **** From 501 to 699, messages are reserved to Dialog Processing **** ?

  The SAP error message WRF_APC500 with the text:
  **** From 501 to 699, messages are reserved to Dialog Processing ****
  is related to the Advanced Planning and Optimization (APO) component, specifically within the APC (Advanced Planning and Control) module.
  
  Cause
  
  This message typically occurs when an internal message number in the range 501 to 699 is triggered, but these message numbers are reserved for Dialog Processing in SAP.
  The system is indicating that the message number being used is not valid or is reserved, and therefore cannot be processed in the current context.
  It often happens due to:
  
  Incorrect or inconsistent message number assignment in custom code or user exits.
  A mismatch or error in the message class or message number used in the APO planning run or related function modules.
  An internal inconsistency or bug in the APO system where a message number is incorrectly called.
  
  
  
  
  Solution
  
  
  Check the Message Number Usage:
  
  Review the custom code, user exits, or enhancements that might be calling message numbers in the range 501 to 699.
  Ensure that message numbers in this range are not used improperly, as they are reserved for dialog processing.
  
  
  
  Correct Message Number:
  
  If you have custom developments, change the message number to a valid range outside 501-699.
  SAP standard messages should not be altered, but if a custom message is used, assign it a number outside the reserved range.
  
  
  
  SAP Notes and Support:
  
  Check for relevant SAP Notes related to WRF_APC500 or message number issues in APO.
  If the problem persists and is due to a standard SAP bug, raise a support ticket with SAP, providing the exact scenario and system logs.
  
  
  
  Debugging:
  
  Use transaction SE91 to check the message class and message number.
  Debug the planning run or the function module where the message is raised to identify the source.
  
  
  
  
  Related Information
  
  
  Message Number Ranges in SAP:
  
  SAP reserves certain message number ranges for specific purposes.
  For example, message numbers 501 to 699 are reserved for dialog processing and should not be used in background or batch processing.
  
  
  
  APO and APC Context:
  
  APC (Advanced Planning and Control) is a part of SAP APO used for detailed production planning.
  Messages in APO are often tightly controlled to ensure proper processing and user interaction.
  
  
  
  Transaction Codes:
  
  SE91 - Message Maintenance
  /SAPAPO/SDP94 - Interactive Planning (where planning runs are executed)
  /SAPAPO/MC90 - Product View (to check master data)
  
  
  
  
  Summary
  
  
  
  Aspect
  Details
  
  
  
  
  Error
  WRF_APC500: "From 501 to 699, messages are reserved to Dialog Processing"
  
  
  Cause
  Message number in reserved range (501-699) used improperly in APO planning or custom code
  
  
  Solution
  Use valid message numbers outside reserved range; check and correct custom developments
  
  
  Related Info
  Message number ranges, APO planning runs, SAP Notes, debugging with SE91
  
  
  
  
  If you provide more context (e.g., when exactly the error occurs, custom code involved), I can help you with more specific guidance.