An accrual/deferral already exists from &1 (current run: &2)

What causes this issue?

You tried to carry out an accrual/deferral on &v2&. However, an
accrual/deferral already exists from &v1&.
Only one accrual/deferral can be posted on any key date.
If an accrual/deferral exists on date t, you cannot post an
accrual/deferral with a key date before date t. This only applies to the
difference procedure.

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

The error occurs in the following position:
&v3&
INCLUDE DIFF_VALUE_DESCRIPTION OBJECT DOKU ID TX

System Response

How to fix this error?

The accrual/deferral from &v1& must first be reversed.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.