How To Fix C0721 - Function may not be called in display mode

C0721 - Overview

• Message type: E = Error

• Message class: C0 - PP-PI: Messages for PI Sheet and Syntax Checker

• Message number: 721

• Message text: Function may not be called in display mode

What causes this issue?

The selected function cannot be called up during PI sheet display,
since this is not allowed according to the definition of the process
instruction.

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?

If you want to call up the function, access the PI sheet using the
function <LS>Maintain PI sheet</>.

Error message extract from SAP system. Copyright SAP SE.

C0721 - Details

• The SAP error message C0721, which states "Function may not be called in display mode," typically occurs when a function module or transaction is being executed in a mode that does not allow for certain operations. This is often related to the way the program is being executed, particularly in display mode where changes to data are not permitted.
  
  Cause:
  
  Display Mode Execution: The function or transaction you are trying to execute is designed to modify data, but it is being called in display mode (for example, when a user is viewing a transaction rather than editing it).
  Authorization Issues: The user may not have the necessary authorizations to execute the function in the intended mode.
  Incorrect Program Logic: The program may have logic that incorrectly determines the mode of execution, leading to this error.
  
  
  Solution:
  
  Check Execution Mode: Ensure that you are executing the function or transaction in the correct mode. If it requires edit