请教大家一个问题，在用legalize_fp_placement时，

提示Error:Voltage area A is partially inside B. (FPL-026)
man如下：
N.MessagesCommand Reference
messages
NAME
FPL-026 (error) Voltage area %s is partially inside %s.
DESCRIPTION
Thiserrorhappenswhen modules from one voltage area are partially,
but not completely inside modules of another voltage area.Forexam-
ple,ifvoltage area V1 consists of module A and voltage area V2 con-
sists of modules C and A/B, then part of V2 (A/B) is insideV1,while
another part (C) is not inside V1, which is not supported. In that sit-
uation, the recommended way to handle this istosplitV2intotwo
voltageareas, one (call it V3) having module C and the other (call it
V4) having module A/B. Then V3 would be disjoint with V1, and V4would
be completely inside V1, and both of those situations are supported.
Notethat this referes to logical, not physical relation between volt-
age areas.
WHAT NEXT
Split the voltage area that is partially insideanotherintosmaller
voltageareas,sothateach of the smaller ones will be either com-
pletely inside, or not overlapping the other voltage areas.
Version
Copyright (c) 2017 Synopsys, Inc. All rights reserved.

但是我UPF中并没有如上这种情形的。请问还可能是什么原因呢?
谢谢大家！

floorplan里两个不同的voltage domains叠加了，重新定义voltage area