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Prevent duplicate case number




I have a created a data submission form with fields : Company_ID, Date of Creation,Proforma_No, Supplier, Customer
This form is to create a new record for each new Proforma we issue, so Proforma_No, should be unique
I want to prevent users from entering duplicate proforma No with a message : Proforma already exists etc.

How can I do that?



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Hi @FadiZ,

If you do not want duplicates, you can set a Field to unique on the Table level:     image.png

An error will be shown on the DataPage when you try to submit a duplicate value to that Field:  image.png

You can change the error message in the Localizations menu:



Please also check this Forum post with a different approach to a similar question:


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