How To Fix MD454 - Define traffic light for exception groups. Press F1 for more information

MD454 - Overview

• Message type: E = Error

• Message class: MD - Material Requirements Planning (MRP)

• Message number: 454

• Message text: Define traffic light for exception groups. Press F1 for more information

How to fix this error?

This is where you use exception groups to define under which
circumstances materials are indicated by red, yellow, or green traffic
lights in the MRP list and the stock/requirements list.
Example:
You want yellow traffic lights to indicate materials with exception
messages for exception group 4, and red traffic lights to indicate
materials with exceptions messages for exception group 5.
You define the following:
,,,,,,,,,,Red,,,,Yellow,,Green
Exception group 4:,,,,,,X
Exception group 5:,,X

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

The traffic light for the material is set after the settings for all
days' supplies and all exceptions groups have been taken into
consideration.
Example:
A material with exception messages for exception group 4 and exception
group 5 would be indicated by a red traffic light in the example above,
as red traffic lights have a higher priority than the yellow traffic
lights.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message MD454 - Define traffic light for exception groups. Press F1 for more information ?

  The SAP error message MD454, which states "Define traffic light for exception groups," typically occurs in the context of SAP's Advanced Planning and Optimization (APO) module, particularly when dealing with exception management in planning scenarios.
  
  Cause:
  This error arises when the system expects you to define a "traffic light" (a visual indicator) for exception groups in the planning environment, but it has not been configured. Traffic lights are used to visually represent the status of exceptions (e.g., red for critical issues, yellow for warnings, and green for normal conditions) to help planners quickly assess the situation.
  
  Solution:
  To resolve this error, you need to define the traffic light settings for the exception groups. Here are the steps to do this:
  
  
  Access the Configuration:
  
  Go to the SAP Easy Access screen.
  Navigate to the following path: SAP APO -> Supply Chain Planning -> Global Settings -> Exception Management -> Define Traffic Light for Exception Groups.
  
  
  
  Define Traffic Light Settings:
  
  In