Diagnosis
If you replicate a business agreement in a contract account, thisshould be created with the same number. However, for this number, noexternal number range exists for number range object FKK_KONTOthat isassigned to a contract account type (table TFK002A). The contractaccount type must not be used for collective invoices or one-timeaccounts.
The number equivalency is required for certain components, for exampleISU/CSS.