Blank spaces in change number & are not supported

What causes this issue?

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Correct the entry for the change number.
If you want to group characters, choose a special character (for
example, "/" or "-") instead of a space.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.