FI-AA New Asset Accounting Deactivation Message No AC501

Dear Experts

I tried to enable new asset accounting. Initially I have activated prepare Asset Accounting new .

Then I tried to check prerequisites for Activating Asset Accounting , then I am trying to Activate Asset Accounting (new)

I am getting the error  , not able save .

So I am not able to do classical asset accounting also , because the system is now In Preparation mode of New Asset accounting

The error is following Chart of depreciation 0DE  not defined or only allowed to be copied Message No AC501

Now I want to go back initial stage for Classical Asset Accounting

How to make Prepare Asset Accounting new as In Activate

Please help me to resolve this issue

Thanks and Regards

Suresh