How To Fix PR418 - Model choice process 1 accessed

SAP Error Message - Details

• Message type: E = Error

• Message class: PR - Forecast: Help messages

• Message number: 418

• Message text: Model choice process 1 accessed

Diagnosis
There are two automatic model selection procedures:
Procedure 1
The system carries out statistical tests and checks whether a trend or
a seasonal requirements pattern applies.
In the trend test, the system subjects the historical values to a
regression analysis and checks to see whether there is a significant
trend pattern.
In the seasonal test, the system clears the historical values of any
possible trends and carries out an autocorrelation test.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

Procedure 2
The system calculates the models to be tested using various
combinations for alpha, beta, and gamma. The smoothing factors are also
varied between 0.2 to 0.8 in intervals of 0.2.
The system then chooses the model which displays the lowest mean
absolute deviation (MAD).
Procedure 2 is more precise than procedure 1 but takes much longer.
System response
Procedure 1 is always used in Flexible Planning. Both procedure 1 and
procedure 2 are possible when you run the forecast in material
requirements planning.
What to do
If you use the forecast in material requirements planning, you set the
selection procedure in the material master record.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PR418 - Model choice process 1 accessed ?

  The SAP error message PR418, which states "Model choice process 1 accessed," typically occurs in the context of SAP's Product Lifecycle Management (PLM) or Advanced Planning and Optimization (APO) modules. This error is related to the model choice process, which is used to determine the appropriate model for a given scenario or planning process.
  Cause:
  The error can be triggered by several factors, including:
  
  
  Configuration Issues: The model choice process may not be properly configured in the system. This could involve missing or incorrect settings in the planning model or the selection criteria.
  
  
  Data Issues: There may be missing or inconsistent data in the master data or transaction data that the model choice process relies on.
  
  
  Authorization Issues: The user may not have the necessary authorizations to access the model choice process or the related data.
  
  
  System Bugs: Occasionally, this error can be caused by bugs in the SAP system or specific versions of the software.
  
  
  Solution:
  To resolve the PR418 error, you can take the following steps:
  
  
  Check Configuration:
  
  Review the configuration settings for the model choice process in the relevant SAP transaction (e.g., transaction code /SAPAPO/MC for model choice).
  Ensure that all necessary parameters and settings are correctly defined.
  
  
  
  Validate Data:
  
  Check the master data (e.g., material master, BOM, etc.) and transaction data for completeness and consistency.
  Ensure that all required data is available and correctly maintained.
  
  
  
  Review Authorizations:
  
  Verify that the user encountering the error has the necessary authorizations to access the model choice process and related data.
  If needed, consult with your SAP security team to adjust user roles and permissions.
  
  
  
  Consult SAP Notes:
  
  Search for relevant SAP Notes in the SAP Support Portal that may address this specific error. There may be patches or updates available that resolve known issues.
  
  
  
  Debugging:
  
  If you have access to debugging tools, you can analyze the process flow to identify where the error occurs. This may require technical expertise.
  
  
  
  Contact SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error, including any relevant logs or screenshots.
  
  
  
  Related Information:
  
  SAP Documentation: Refer to the official SAP documentation for the specific module you are working with (e.g., PLM, APO) for more detailed information on model choice processes.
  Community Forums: Check SAP Community forums or other user groups for discussions related to the PR418 error. Other users may have encountered similar issues and can provide insights or solutions.
  Training and Resources: Consider training sessions or resources that cover the model choice process in SAP, as understanding the underlying concepts can help prevent similar issues in the future.
  
  By following these steps, you should be able to diagnose and resolve the PR418 error in your SAP system.