Contract Target Value to PO

Dear All,

I am having a Service PR with value 2,695,929.00 USD, also one contract with Target Value 7000000 SAR, but in the service specification of contract, value is 5.00 SAR.

Now I had created release order with ref to both PR and Contract, and PO had captured 5.00 SAR from contract service specification. But the buyer had changed the currency as well as value in PO to 2,695,929.00 USD which exeeds contract value. System message 06/042 and SE/347 is set to the status "E". Still for the above process system not showing Error "Target value of contract & exceeded by & &".

Please advice.

Regards