How To Fix IP437 - Function not possible as scheduling currently locked

IP437 - Overview

• Message type: E = Error

• Message class: IP - Messages for preventive maintenance

• Message number: 437

• Message text: Function not possible as scheduling currently locked

What causes this issue?

You have tried to perform a scheduling function. This is not possible
because in the meantime the <GL:maintenance_plan>maintenance plan</>
has received the status <LS>Inactive</> or <LS>Deletion flag</>.

System Response

INCLUDE 'KEINE-FUNKTION' OBJECT DOKU ID TX LANGUAGE EN

How to fix this error?

If you still want to perform the function, you must first activate the
maintenance plan or reset the deletion flag.
To do this, proceed as follows:
Leave the <GL:transaction>transaction</> and go into the change mode in
the maintenance plan.
Activate the maintenance plan or reset the deletion flag.
Save the change.
RESET N1
The maintenance plan can then be scheduled again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message IP437 - Function not possible as scheduling currently locked ?

  The SAP error message IP437, which states "Function not possible as scheduling currently locked," typically occurs in the context of production planning and scheduling within the SAP system. This error indicates that the scheduling function you are trying to execute is currently locked, preventing any changes or updates to the scheduling data.
  Causes:
  
  Locking Mechanism: The scheduling process may be locked due to another user or process currently accessing or modifying the scheduling data. This is a common scenario in multi-user environments.
  Background Jobs: A background job that is currently running may be holding a lock on the scheduling data.
  Transaction in Progress: If a transaction related to scheduling is still in progress, it can lead to this error.
  System Configuration: Certain configurations or settings in the SAP system may inadvertently lead to locking issues.
  
  Solutions:
  
  Wait and Retry: If the lock is temporary (e.g., due to another user), waiting for a few moments and then retrying