Diagnosis
The change that you are trying to make to the contract is not possiblebecause the cash flow for this contract has been archived up to &v1&.If you were to implement this change, follow-up postings dated beforeV1 would be generated.

System Response
The system does not allow this change.

Procedure
When archiving the cash flow, you should make sure that you onlyarchive periods for which no retroactive changes are expected.
For this particular change, choose a date after &v1&. Carry outmanually the adjustment postings that may be required before &v1&.