How To Fix 40021 - Changed resource for operation &1 copied to its phases

40021 - Overview

• Message type: E = Error

• Message class: 40 - Messages for Process Orders

• Message number: 021

• Message text: Changed resource for operation &1 copied to its phases

What causes this issue?

You have changed the resource or the plant for an operation. These
changes are copied to the phases of this operation.

System Response

Depending on the system settings, the system will branch to the phase
entry function.

How to fix this error?

Please check the standard values in this function.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message 40021 - Changed resource for operation &1 copied to its phases ?

  The SAP error message 40021, which states "Changed resource for operation &1 copied to its phases," typically occurs in the context of production planning and control (PP) or project system (PS) modules. This message indicates that a resource assigned to a particular operation has been changed, and this change has been propagated to the phases of that operation.
  
  Cause:
  The error is usually triggered by one of the following scenarios:
  
  Resource Change: A resource (e.g., machine, labor) assigned to an operation has been modified, and the system is notifying you that this change has been applied to all associated phases of that operation.
  Data Consistency: The system is ensuring that the data remains consistent across the operation and its phases. If a resource is changed, it needs to be reflected in all related components to avoid discrepancies.
  
  
  Solution:
  To resolve this error, you can take the following steps:
  
  Review Changes: Check the changes made to the resource