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

SAP Error Message - Details

• 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.

Smart SAP Assistant

• What is the cause and solution for SAP error message C0721 - Function may not be called in display mode ?

  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 mode, switch to that mode.
  Review User Authorizations: Verify that the user has the necessary authorizations to perform the action. This can be done by checking the user's roles and authorizations in the SAP system.
  Debugging: If you have access to the ABAP code, you can debug the program to see where the error is being triggered. Look for conditions that check the mode of execution and ensure they are set correctly.
  Consult Documentation: Review the documentation for the specific function module or transaction to understand its requirements and limitations.
  Contact Support: If the issue persists and you cannot identify the cause, consider reaching out to your SAP support team or consulting SAP Notes for any known issues related to this error.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any updates or patches related to the specific function or transaction you are using.
  Transaction Codes: Familiarize yourself with the transaction codes involved and their expected modes of operation.
  User Roles: Ensure that user roles are correctly assigned and that they include the necessary permissions for the operations being performed.
  
  By following these steps, you should be able to identify the cause of the C0721 error and implement a suitable solution.