How To Fix CY405 - Operation was deallocated because of changes relevant to scheduling

CY405 - Overview

• Message type: E = Error

• Message class: CY - Capacity Requirements Planning

• Message number: 405

• Message text: Operation was deallocated because of changes relevant to scheduling

What causes this issue?

The operation was changed. The changes have effects on the operation
duration and the commitment situation of the capacities.
The operation is deallocated.

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?

Dispatch the operation again.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CY405 - Operation was deallocated because of changes relevant to scheduling ?

  The SAP error message CY405 indicates that an operation in a production order or a process order has been deallocated due to changes that are relevant to scheduling. This typically occurs when there are modifications to the order that affect the scheduling of operations, such as changes in the order's start or finish dates, changes in the resources assigned, or changes in the production quantities.
  Causes of CY405 Error
  
  Changes in Order Data: Modifications to the production order, such as changing the quantity, dates, or operations, can lead to the deallocation of operations.
  Resource Availability: If the resources (machines, labor) assigned to the operation are no longer available due to scheduling conflicts or maintenance, the operation may be deallocated.
  Capacity Planning Adjustments: Changes in capacity planning or resource allocation can also trigger this error.
  Manual Interventions: Manual changes made by users in the order or scheduling parameters can lead to this situation.
  
  Solutions to CY405 Error
  
  Review