You can add a recordset to the top of the insert page that looks up existing records based on the two key fields. Then you can use Server Validation to validate that the recordset doesn't return any rows to verify the keys aren't repeated.
You can add a recordset to the top of the insert page that looks up existing records based on the two key fields. Then you can use Server Validation to validate that the recordset doesn't return any rows to verify the keys aren't repeated.
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