R12 - Error encountered when trying to re-activate Inactive Sites and when trying to update DFF of A

Hi,

We are working on R12 upgrade project. I'm testing the Supplier Site Entry form, by re-activating an Inactive Site of an Employee, that is by removing the Inactive Date, when I get this error message:

PO_VENDOR_SITESFor Row: 1 , OU OU - US Commercial : nullOracle error 942: java.sql.SQLSyntaxErrorException: ORA-00942: table or view does not exist has been detected in ValueSet.isValueValid.

I tried to search for this exact Error message in the Knowledge base but came up empty.

When we try to update the DFF of an Active site, converted or newly added, we get this error message "