One or more prior period key figures is not equal to zero; please correct

What causes this issue?

When goodwill in local currency arises in the current fiscal period, all
key figures that refer to prior periods must be equal to zero. This
applies to the following key figures - both in local currency and group
currency:
Accumulated adjustment of original cost for divestiture in prior periods
C/T difference from original cost prior year in prior periods
C/T difference from original cost current year in prior periods
Divestiture of C/T difference from original cost in prior periods
C/T difference for divestiture of original cost in prior periods
C/T difference for valuation allowance in income statement prior year in
prior periods
Valuation allowance in prior periods
C/T difference between balance sheet and income statement in prior
periods
Divestiture of valuation allowance, current year in prior periods
Divestiture of valuation allowance, prior year in prior periods
C/T difference for divestiture of valuation allowance in prior periods
In the current goodwill entry, at least one of these key figures does
not equal zero.

System Response

The system automatically sets these key figures to zero.

How to fix this error?

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

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.