& have different profit centers

What causes this issue?

You entered multiple &v1& objects assigned to different profit centers.
In a document item, however, all &v1& objects with profit center
assignments must be assigned to the same profit center.

How to fix this error?

If the message is an error message, check and change the &v1& objects
so that all objects with profit center assignments are assigned to the
same profit center.
In Customizing, you can change this message from an error message to a
warning message, a notification, or you can deactivate it completely.
To do so, see the Implementation Guide (IMG) step under "Controlling:
General -> <DS:SIMG.SIMG_CFMENUORK3OBA5>Change Message Control</>"
(message class BK, message 134).

Error message extract from SAP system. Copyright SAP SE.