In fact I want to create a Accounr Entry Line E.g Debit 100$ Credit 300$ it will be error "Wrong credit or debit value in model" Because this code" ('credit_debit1', 'CHECK (credit*debit=0)', 'Wrong credit or debit value in model !'), " But in China this example(both of debit and credit have value) is very common.Anyboay have solution [Laughing] Thank you very much. Joshua
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