How To Fix PR422 - Trend test is positive

PR422 - Overview

• Message type: E = Error

• Message class: PR - Forecast: Help messages

• Message number: 422

• Message text: Trend test is positive

What causes this issue?

The system has examined the historical data to see if it shows a trend
pattern. A trend pattern has been detected.

System Response

The system will use a trend model to carry out the forecast.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

PR422 - Details

• The SAP error message PR422, which states "Trend test is positive," typically occurs in the context of statistical process control (SPC) or quality management within SAP. This message indicates that a trend has been detected in the data being analyzed, which may suggest that the process is not in control and could be drifting away from the desired performance.
  
  Cause:
  
  Data Trends: The underlying cause of this error is usually related to the data collected over time showing a consistent upward or downward trend. This could indicate that the process is not stable and may require investigation.
  Process Variation: It may also be a result of special cause variation, where external factors are affecting the process.
  Control Limits: The control limits set for the process may not be appropriate, leading to false positives in trend detection.
  
  
  Solution:
  
  Investigate the Data: Review the data points that triggered the trend test. Look for any anomalies or changes in