Profitability segment being derived again

What causes this issue?

You have assigned to a profitability segment together with &V1&. The
auxilliary account assignment &V1& assigned to profit center &V2& and
business area &V3&, the profitability segment, however, belongs to
profit center/business area &V4&.

System Response

You are not allowed to make multiple account assignments to objects with
different profit centers or business areas.

How to fix this error?

If &V1& is assigned to correctly, confirm this message. In this case,
the system derives the profitability segment as new.
If the profit center-/business area assignment &V4& of the profitability
segment is correct, change the auxilliary account assignment. Instead of
&V1&, specify an account assignment object with the suitable profit
center/business area &V4&.
This message is issued as a warning in the standard. If you confirm the
message, the profitability segment is derived as new.
In Customizing you can change the message type or switch off the
message:
Message switched off: the profitability segment is derived as new, the
message is not issued.
Message type "S", "I" or "W" (Standard): the profitability segment is
derived as new, the message is issued.
Message type "E": The system issues an error message and the
profitability segment is not derived as new.
Message type "A": <ZH>No</> error message is issued and the
profitability segment is not derived as new.
Message type "A" does not lead to a termination message, but is used in
this special case to recreate the program logic of an earlier release
(up to 4.0B) This setting can lead to follow-on errors, such as, error
messsage <DS:NA.BK134>BK134</>.

Procedure for System Administrators

Changing the message type for message KI155: see the Implementation
Guide (IMG) "General Controlling", IMG activity
<DS:SIMG.SIMG_CFMENUORK3OBA5>"Change Message Control"</> (Work area
"KI", Message number "155").

Error message extract from SAP system. Copyright SAP SE.