You have not made an entry in all the required fields

What causes this issue?

You must make an entry in the fields
Standard hierarchy
Currency type
for each controlling area.
If these fields are not all filled, you cannot activate EC-PCA.

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

System Response

How to fix this error?

Make entries for the standard hierarchy and the currency type. You must
make these entries before you can activate Profit Center Accounting.

Error message extract from SAP system. Copyright SAP SE.