Diagnosis
You want to delete the data that you have transferred from the legacysystem to the Accrual Engine.
However, the data transfer has already taken place in the productive runfor company code &V1&.

System Response
Deletion of legacy data is not permitted, as this could lead toproductive data being accidentally deleted as well.

Procedure
In Customizing for the Accrual Engine, change the legacy data transfermode from "Legacy data transfer for productive operation" to "Legacydata transfer for test purposes".
You will then be able to delete the transferred legacy data.