How To Fix IW023 - Changing the sign is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: IW - Order Processing

• Message number: 023

• Message text: Changing the sign is not allowed

What causes this issue?

You want to change the sign of the requirement quantity for a
reservation item. The withdrawal quantity for this item is not 0.
Therefore it is not possible to change the sign.

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?

Cancel the goods movement that have been previously created for this
item, so that the withdrawal quantity is 0.
Alternatively, you can create a new reservation item.

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 IW023 - Changing the sign is not allowed ?

  The SAP error message IW023 ("Changing the sign is not allowed") typically occurs in the context of maintenance orders or service orders when there is an attempt to change the sign of a value that is not permitted. This can happen in various scenarios, such as when trying to modify costs, quantities, or other financial figures associated with the order.
  Cause:
  
  Negative Values: The error often arises when there is an attempt to enter a negative value in a field that does not allow it, such as a quantity or cost field that is expected to be positive.
  Order Status: The status of the order may restrict certain changes. For example, if the order is already released or completed, certain modifications may not be allowed.
  Configuration Settings: The system configuration may restrict changes to certain fields based on business rules or settings in the order type.
  
  Solution:
  
  Check the Values: Review the values you are trying to enter. Ensure that you are not inadvertently trying to enter a negative value where it is not allowed.
  Order Status: Check the status of the order. If the order is in a status that does not allow changes (e.g., "TECO" - Technically Completed), you may need to change the status back to a modifiable state or create a new order.
  Consult Configuration: If you believe the configuration settings are too restrictive, consult with your SAP administrator or functional consultant to review the settings for the order type and see if adjustments can be made.
  Use Correct Transactions: Ensure you are using the correct transaction codes for the actions you are trying to perform. For example, if you are trying to adjust costs, make sure you are using the appropriate transaction for cost adjustments.
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. Sometimes, specific versions of SAP may have bugs that are documented in SAP Notes.
  Documentation: Review the SAP documentation related to order management and the specific transaction you are using to understand the allowed values and restrictions.
  User Permissions: Ensure that you have the necessary permissions to make changes to the order. Sometimes, user roles can restrict certain actions.
  
  If the issue persists after checking these aspects, it may be beneficial to reach out to your SAP support team for further assistance.