How To Fix P0450 - Line command & is only allowed for active COPY function

P0450 - Overview

• Message type: E = Error

• Message class: P0 - Messages for Transactions PE01, PE02 and PE03

• Message number: 450

• Message text: Line command & is only allowed for active COPY function

What causes this issue?

You are trying to delete a subschema. This error can occur for
various reasons:
The line command can only be used with the COPY function.
The line is inactive because the subschema has already been deleted.
This is indicated by the text 'END OF COPY' in one of the following
lines with the name of the subschema. We do not recommend that you
carry out more deletions here.
The line is inactive because the subschema has not been used before.
In this case you can activate the line and then delete the subschema.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message P0450 - Line command & is only allowed for active COPY function ?

  The SAP error message P0450 typically indicates that there is an issue with the line command in the context of a COPY function that is not currently active. This error can occur in various SAP transactions, particularly when dealing with data management or copying functions.
  
  Cause:
  The error message "Line command & is only allowed for active COPY function" suggests that the system is trying to execute a line command (like copying, deleting, or modifying) on a dataset or object that is not in an active state for the COPY function. This can happen due to several reasons:
  
  The COPY function is not activated or is in a different state (e.g., inactive).
  The user is trying to perform an operation on a dataset that is not currently available for copying.
  There may be a configuration issue or a missing prerequisite for the COPY function to be active.
  
  
  Solution:
  To resolve the P0450 error, you can take the