How To Fix PR134 - Forecast run for plant & already started

PR134 - Overview

• Message type: E = Error

• Message class: PR - Forecast: Help messages

• Message number: 134

• Message text: Forecast run for plant & already started

What causes this issue?

The system is already carrying out the forecast for plant &V1& as
another user has started the forecast run. The forecast cannot be
started a second time.

System Response

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

How to fix this error?

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message PR134 - Forecast run for plant & already started ?

  The SAP error message PR134, which states "Forecast run for plant & already started," typically occurs when you attempt to start a forecast run for a plant that is already in the process of executing a forecast. This can happen in the context of demand planning or forecasting within SAP's Advanced Planning and Optimization (APO) module or similar functionalities.
  
  Cause:
  
  Concurrent Execution: The most common cause of this error is that a forecast run for the specified plant is already in progress. SAP does not allow multiple forecast runs for the same plant to ensure data integrity and avoid conflicts.
  System Locking: The system may have a locking mechanism that prevents starting a new forecast run while another one is still active.
  Long-Running Processes: If a previous forecast run is taking longer than expected, it may lead to this error when trying to initiate a new run.
  
  
  Solution:
  
  Check Active Processes: Verify if there is an