How To Fix MPLAN555 - Define the call horizon in percent

SAP Error Message - Details

• Message type: E = Error

• Message class: MPLAN - Messages for Maintenance Plan API

• Message number: 555

• Message text: Define the call horizon in percent

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message MPLAN555 - Define the call horizon in percent ?

  The SAP error message MPLAN555 indicates that the system requires you to define the call horizon in percent for a specific planning scenario. This error typically arises in the context of production planning and material requirements planning (MRP) when the system is trying to calculate or process planning data but lacks the necessary configuration.
  Cause:
  The error occurs because the system does not have a defined percentage for the call horizon, which is essential for determining how far into the future the system should consider demand when planning. The call horizon is a critical parameter in MRP that helps in managing inventory levels and production schedules effectively.
  Solution:
  To resolve the MPLAN555 error, you need to define the call horizon in the relevant configuration settings. Here are the steps to do this:
  
  
  Access the Configuration:
  
  Go to the SAP Easy Access screen.
  Navigate to the following path: 
  Logistics -> Production -> MRP -> MRP Settings -> Define Call Horizon
  
  
  
  
  Define the Call Horizon:
  
  In the configuration screen, you will find options to set the call horizon in percentage.
  Enter the desired percentage value that reflects how far into the future you want the system to consider demand for planning purposes. This value is typically based on your business requirements and planning strategy.
  
  
  
  Save the Configuration:
  
  After entering the appropriate percentage, save your changes.
  
  
  
  Re-run the Planning Process:
  
  Once the call horizon is defined, re-run the MRP or planning process that triggered the error.
  
  
  
  Related Information:
  
  Call Horizon Definition: The call horizon is often expressed as a percentage of the total planning period. For example, if you set a call horizon of 50%, the system will consider demand for the next half of the planning period.
  Impact on Planning: A well-defined call horizon helps in optimizing inventory levels, reducing stockouts, and improving production efficiency.
  Documentation: Refer to SAP documentation or help files for more detailed information on MRP settings and best practices for defining planning parameters.
  
  If you continue to experience issues after defining the call horizon, it may be beneficial to consult with your SAP support team or refer to SAP Notes for any specific patches or updates related to this error.