How To Fix PK521 - Status change not allowed

PK521 - Overview

• Message type: E = Error

• Message class: PK - Production - KANBAN

• Message number: 521

• Message text: Status change not allowed

What causes this issue?

The following changes to the lifecycle status are allowed:
From 'In Preparation' to 'Ready for Release' or 'Released'
From 'Ready for Release' to 'Released' or 'Locked'
From 'Released' to 'Ready for Release' (only if all kanban containers
are locked) or 'Locked'
From 'Locked' to 'Ready for Release' (only if all kanban containers are
locked) or 'Released'

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?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

PK521 - Details

• The SAP error message PK521, which states "Status change not allowed," typically occurs in the context of production planning and control, particularly when dealing with production orders, process orders, or similar objects. This error indicates that the system is preventing a status change for a particular order due to certain conditions not being met.
  Causes of PK521 Error
  
  
  Order Status Restrictions: The order may be in a status that does not allow for the requested change. For example, if an order is already completed or closed, it cannot be set to a status that implies further processing.
  
  
  Dependencies on Other Objects: The order may have dependencies on other objects (like dependent orders or materials) that are not in a suitable status for the change.
  
  
  User Authorizations: The user attempting to change the status may not have the necessary authorizations to perform that action.
  
  
  Configuration Settings: The system configuration may restrict certain status changes based on