Error AC770, derived area 3 in chart of depreciation x requires at least two base depreciation area

[MIhir1]

Hi,

I want to create new depreciation area , so I just enter OADB code and copy the existing one and create but while I trying to saving to generate transport request , it gives me error for other  depreciation area that 

"The derived area 31 in chart of depreciation XYZ requires at least two base depreciation areas."

until resolved  issue system don't allow me to create new depreciation area.

please provide suggestion 

[Mark_W]

It sounds like you are picking a derived area to copy, can you check it.