How To Fix IW023 - Changing the sign is not allowed

IW023 - Overview

• 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.

IW023 - Details

• 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