How To Fix 61134 - The planning run for plant & has already been started

61134 - Overview

• Message type: E = Error

• Message class: 61 - Fehlermeldungen fuer Bedarfsplanung

• Message number: 134

• Message text: The planning run for plant & has already been started

What causes this issue?

There are two possibilities in this case:
either you have already started the planning run for the plant and this
is being carried out at present
or the planning run is still locked due to a blocking entry from the
previous planning run.

How to fix this error?

In the second case, you must unlock the planning run. You do this as
described below:
Make sure that no planning run is active as if a planning run is active
when you try to unlock MRP, this could lead to incorrect results.
Select Tools -> Administration
Select Monitoring -> Lock entries

Error message extract from SAP system. Copyright SAP SE.

61134 - Details

• The SAP error message 61134, which states "The planning run for plant & has already been started," typically occurs in the context of production planning or materials management when a planning run (such as MRP - Material Requirements Planning) is initiated for a specific plant that is already in the process of being executed.
  
  Cause:
  
  Concurrent Planning Runs: The most common cause of this error is that a planning run for the specified plant is already in progress. SAP does not allow multiple planning runs to be executed simultaneously for the same plant to prevent data inconsistencies.
  Long-Running Processes: If a previous planning run is taking longer than expected, it may still be active when a new planning run is attempted.
  System Locking: The system may have a lock on the planning run process, preventing new runs from being initiated until the current one is completed.
  
  
  Solution:
  
  Check Active Planning Runs: Use transaction codes like MD04