How To Fix EMDUS520 - Used formulas cannot be set to inactive

SAP Error Message - Details

• Message type: E = Error

• Message class: EMDUS -

• Message number: 520

• Message text: Used formulas cannot be set to inactive

What causes this issue?

You attempted to set an active TOU formula to inactive even though the
formula is already being used in a TOU interface.
You can only use active formulas in a time-of-use interface. You can
only change the name and the notes of active formulas. To change the
input or output parameters, or to delete the formula, you first have to
set the status to inactive. This is only possible if the formula is not
being used in an interface.

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?

First delete the TOU formula from every TOU interface in which it is
used.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message EMDUS520 - Used formulas cannot be set to inactive ?

  The SAP error message EMDUS520, which states "Used formulas cannot be set to inactive," typically occurs in the context of SAP's formula management, particularly in modules like SAP Product Lifecycle Management (PLM) or SAP Recipe Management. This error indicates that you are trying to set a formula to inactive status, but the formula is currently in use or referenced by other objects, such as products, recipes, or other formulas.
  Cause:
  
  Active References: The formula you are trying to set to inactive is still being referenced by other active objects in the system.
  Dependencies: There may be dependencies or links to other processes, such as production orders, that prevent the formula from being deactivated.
  Authorization Issues: Sometimes, the user may not have the necessary permissions to change the status of the formula.
  
  Solution:
  To resolve the EMDUS520 error, you can follow these steps:
  
  
  Check References:
  
  Identify where the formula is being used. You can do this by checking the formula's usage in related objects (e.g., products, recipes, or production orders).
  Use transaction codes like CS03 (Display Material BOM) or C223 (Display Recipe) to find references to the formula.
  
  
  
  Remove Dependencies:
  
  If the formula is being used in active recipes or BOMs, you will need to either delete or deactivate those references before you can set the formula to inactive.
  Ensure that any production orders or processes that reference the formula are completed or closed.
  
  
  
  Change Status:
  
  Once all references are cleared, you can attempt to set the formula to inactive again.
  Use the appropriate transaction code (e.g., C201 for changing formulas) to change the status.
  
  
  
  Check Authorizations:
  
  Ensure that you have the necessary authorizations to change the status of the formula. If not, contact your SAP administrator to grant the required permissions.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help files for more detailed instructions on managing formulas and their statuses.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes for formula management, such as C201 (Change Formula), C202 (Display Formula), and C223 (Display Recipe).
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  User Roles: Ensure that your user role has the necessary permissions to perform changes in formula management.
  
  By following these steps, you should be able to resolve the EMDUS520 error and successfully set the formula to inactive.