How To Fix PR418 - Model choice process 1 accessed

PR418 - Overview

• 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